South Carolina State Flag Size Guide: What Size SC Flag Should You Fly?

Q: What size South Carolina flag fits a house-mount bracket?

For a standard 6-foot house-mount arm, choose a 2×3 ft South Carolina flag. For an 8-foot arm — common on two-story homes — use a 3×5 ft flag. The flag's fly (long) end should not exceed the length of the mounting arm. In coastal South Carolina, where salt air accelerates fabric degradation, always choose nylon at minimum for house-bracket display and upgrade to polyester for any oceanfront or marsh-facing exposure.

Q: What size South Carolina flag do schools use?

K-12 schools in South Carolina most commonly use a 4×6 ft flag on a 25-30 foot pole. For larger university campuses — University of South Carolina, Clemson University, College of Charleston, The Citadel, Coastal Carolina University — a 5×8 ft flag on a 35-40 foot pole provides the visibility needed across open grounds. Indoor classroom display uses a 3×5 ft flag on a 7-8 ft pole.

December 2, 2025

Tidmore Flags — Flag Education Center

From a Charleston porch bracket to a Myrtle Beach commercial flagpole — the 25% rule applied to South Carolina's coastal wind, humidity, and hurricane exposure, with setting-by-setting recommendations across the Lowcountry, Midlands, and Upstate.

2×3 to 8×12 25% Rule Lowcountry · Midlands · Upstate U.S. Flag Pairing Indoor Sizing

Overview

The Short Answer — and Why South Carolina's Coast Makes Material Matter as Much as Size

The most common South Carolina state flag sizes are 3×5 ft for a 20-foot residential pole and 4×6 ft for a 25–30 foot commercial or school pole. For most Palmetto State settings those two figures serve as the right starting point — but South Carolina has a climate dimension that demands attention alongside pole math.

South Carolina's coastline is one of the most demanding flag environments in the eastern United States. Charleston averages 52.4 inches of annual precipitation (NOAA NCEI 1991–2020 normals); Myrtle Beach receives 51.4 inches. More significantly, the entire coast sits within the Atlantic hurricane belt — the June 1 through November 30 season brings the threat of tropical storm and hurricane-force winds to every coastal county from Horry to Beaufort. Hurricane Hugo (1989) made landfall near Charleston with sustained winds of 135 mph and gusts to 160 mph; Hurricane Dorian (2019) brushed the coast with tropical storm conditions across multiple counties. A flag oversized for its pole is a liability in those conditions, and even a correctly sized flag in nylon will degrade rapidly under the combination of salt air, high humidity, and UV that characterizes the Lowcountry year-round.

Looking to buy a South Carolina flag? Shop our South Carolina State Flag Collection.

Size correctly for your pole using the 25% rule below, then match material to your exposure level — coastal or inland, salt air or fresh. Both decisions matter more in South Carolina than in most states.

2×3

House bracket
6 ft arm

3×5

20 ft pole
Most common

4×6

25–30 ft pole
Schools, HOAs

5×8

35–40 ft pole
University, civic

6×10

50–60 ft pole
State buildings

8×12

60–80 ft pole
Highways, resorts

Complete Size Chart

South Carolina Flag Sizes by Pole Height

The table below covers every standard outdoor size from a house-mount bracket to a major highway or resort flagpole. The "Typical South Carolina Setting" column reflects common display scenarios across the Lowcountry coast, Midlands, and Upstate Piedmont.

Flag Size	Pole Height	Fly ÷ Pole	Typical South Carolina Setting
2×3 ft	6 ft arm / table	—	House-mount bracket (6 ft arm), desktop, boat, parade stick, golf cart
3×5 ft Most Popular	20 ft	25%	Standard residential in-ground pole — Columbia neighborhoods, Greenville yards, inland Charleston subdivisions
4×6 ft Common	25–30 ft	24%	HOA entry poles, K–12 schools, small business campuses, county buildings, golf resort entries
5×8 ft	35–40 ft	25%	University campuses (USC, Clemson, CofC, The Citadel, Coastal Carolina), large commercial properties, county courthouses
6×10 ft	50–60 ft	20–25%	South Carolina State House in Columbia, major municipal campuses, large resort and conference center poles
8×12 ft	60–80 ft	20%	Highway commercial poles along I-26 and I-95, Grand Strand resort row, major event venues and stadium complexes

The 25% Rule: The fly end (long dimension) of a flag should equal roughly one-quarter of the pole height. A 20-foot pole → 5 ft fly → 3×5 flag. A 25-foot pole → 6 ft fly → 4×6 flag. Flags sized below 20% of pole height look lost; flags above 30% put excessive stress on hardware — a serious concern along the South Carolina coast, where tropical storm gusts can reach 60–90 mph and hurricane-force winds exceed 100 mph during the June–November season. Always size correctly before selecting material.

Setting-by-Setting Guide

Right-Size Your South Carolina Flag for Where It'll Fly

The 25% rule gives you the correct size for any pole height. These setting cards apply that rule to the most common display scenarios across South Carolina — from a Columbia subdivision to a Hilton Head resort pole to a Citadel ceremonial hall.

🏠

House-Mount Bracket

2×3 ft on 6 ft arm · 3×5 ft on 8 ft arm

The standard 45-degree bracket on a front porch or garage uses a 6-foot arm — pair it with a 2×3 South Carolina flag. Larger two-story brackets with an 8-foot arm take a 3×5. The fly end should not extend beyond the arm tip. In coastal South Carolina — anywhere within 10 miles of tidal salt water — the relentless combination of salt air, humidity, and UV exposure will degrade nylon faster than standard conditions; upgrade to polyester for oceanfront and marsh-facing house brackets.

🏡

Residential In-Ground Pole

3×5 ft on 20 ft pole

The 20-foot aluminum or fiberglass pole is South Carolina's standard residential choice — common from Columbia's Forest Acres neighborhoods to Greenville's North Main corridor and Lexington County subdivisions. A 3×5 ft South Carolina flag is correct at this height and satisfies the 25% rule exactly. Inland and Upstate residential settings with good tree shelter can fly nylon year-round; Lowcountry and coastal residential poles should use 2-ply polyester given the salt-air and humidity environment.

🌊

Coastal & Barrier Island Poles

3×5 ft on 20 ft · size per pole · 2-ply polyester required

Beach houses, waterfront properties, and barrier island poles from Pawleys Island to Fripp Island face the most demanding flag environment in South Carolina. Salt spray penetrates flag fabric and accelerates grommet corrosion far faster than freshwater rain. Size per the 25% rule for your pole, then fly 2-ply polyester exclusively — nylon simply does not hold up under the combined assault of salt air, high UV, and the Atlantic's prevailing onshore breeze. Retrieve the flag before any NWS tropical watch or warning takes effect.

🏘️

Subdivision & HOA Entry Poles

4×6 ft on 25–30 ft pole

HOA entry monuments and subdivision flagpoles are typically 25–30 feet — common along South Carolina's growing residential corridors in Lexington, Dorchester, Horry, and Berkley counties. A 4×6 ft flag satisfies the 25% rule for this height range. For entry poles in the coastal plain — anything east of I-95 — use 2-ply polyester. Inland and Upstate entry poles in sheltered landscaped settings can fly nylon successfully through the summer season.

🏫

Schools & University Campuses

4×6 ft on 25–30 ft (K–12) · 5×8 ft on 35–40 ft (university)

Most South Carolina K–12 schools fly from a 25–30 foot pole — a 4×6 flag is the statewide standard. University campuses — University of South Carolina in Columbia, Clemson University, College of Charleston, The Citadel, Coastal Carolina University in Conway, Winthrop University in Rock Hill — typically use 35–40 ft poles where a 5×8 flag provides campus-scale visibility. The Citadel's parade ground poles and formal display standards call for 2-ply polyester year-round given their exposed Charleston peninsula location.

🏢

Small Business & Commercial

4×6 ft on 25–30 ft · 5×8 ft on 35–40 ft

Retail centers and office parks along South Carolina's commercial corridors — Two Notch Road and Harbison in Columbia, Woodruff Road in Greenville, Kings Highway in Myrtle Beach — typically use 25–30 foot poles (4×6) or 35–40 foot poles (5×8). Grand Strand resort-row poles along U.S. 17 and restaurant rows near the Myrtle Beach oceanfront often use 6×10 on 50–60 foot poles for high-traffic visibility. All coastal commercial poles should fly 2-ply polyester.

⛳

Golf Resorts & Hospitality Properties

Size per pole · 2-ply polyester for all coastal resort sites

South Carolina hosts more than 350 golf courses — the highest density per capita of any state east of the Mississippi — and resort properties from Hilton Head to Kiawah Island to Pinehurst-area courses fly state and U.S. flags at entry gates, clubhouses, and cart staging areas. Size per the 25% rule for your pole. All Lowcountry and coastal resort sites should fly 2-ply polyester; Upstate Piedmont resort properties with good tree shelter can use nylon through the growing season but should upgrade to polyester for year-round display.

🏛️

Government & Civic Buildings

5×8 on 35–40 ft · 6×10 on 50–60 ft · 8×12 on 60–80 ft

South Carolina's 46 county courthouses typically fly from 35–50 foot poles (5×8). The South Carolina State House in Columbia and major state agency campuses use 50–60 foot poles (6×10). Highway poles and major event venue flagpoles — Colonial Life Arena, Williams-Brice Stadium area, Myrtle Beach Convention Center — call for 8×12 on 60–80 ft poles. Always measure or confirm the actual pole height before ordering for civic or government display; visual estimates are frequently 10–15 feet low.

🎖️

Indoor & Ceremonial Display

3×5 ft on 7–8 ft pole · 4×6 ft on 8–9 ft pole

Rooms with 8-foot ceilings use a 3×5 flag on a 7-foot indoor pole (leaving finial clearance). Standard offices, school hallways, and civic lobbies with 9–10-foot ceilings use a 3×5 on an 8-foot pole or a 4×6 on an 8–9 foot pole. Grand halls, auditoriums, and The Citadel's ceremonial spaces use a 4×6 flag on a 9-foot pole. Indoor flags use pole-hem sleeves rather than grommets; gold fringe is traditional for formal settings — state offices, courtrooms, military institutions, and civic organizations throughout South Carolina.

Lowcountry · Midlands · Upstate

Regional Notes: South Carolina's Three Distinct Flag-Flying Environments

South Carolina spans three climatically distinct regions from the Atlantic coast to the Blue Ridge foothills — the Lowcountry coastal plain, the Midlands Sandhills and Piedmont, and the Upstate. Each region presents a different set of wind, humidity, and storm exposure conditions that affect both material selection and retrieval practice.

Lowcountry

Coastal Plain, Sea Islands & Grand Strand

Charleston · Myrtle Beach · Hilton Head · Beaufort · Georgetown · Pawleys Island

Charleston averages 8.8 mph annual wind (NOAA NCDC) and 52.4 inches annual precipitation (NOAA NCEI 1991–2020 normals) across 114 rain days. Myrtle Beach averages 9.4 mph and 51.4 inches. The defining climate factor for flag display is not precipitation or average wind speed — it is the combination of salt air, tropical storm exposure, and coastal UV intensity that operates year-round. Any flag within 10 miles of tidal water should fly 2-ply polyester exclusively. Retrieve before any NWS Tropical Storm Watch, Tropical Storm Warning, Hurricane Watch, or Hurricane Warning issued for your county. Hurricane Hugo (1989) and the track record of direct hits across the state's 187-mile coastline make retrieval protocol as important as material selection.

Midlands

Sandhills, Congaree Basin & Pee Dee

Columbia · Sumter · Florence · Orangeburg · Camden · Manning

Columbia averages 7.1 mph annual wind (NOAA NCDC) and 49.2 inches annual precipitation (NOAA NCEI). The Midlands lacks the salt-air factor of the coast but experiences significant severe thunderstorm activity — the Congaree Basin and Pee Dee region see frequent summer afternoon convection with wind gusts reaching 50–60 mph in isolated supercell events. Columbia's open suburban corridors along I-26 and I-20 offer limited terrain shelter. For sheltered residential settings with mature trees and building windbreaks, nylon is a viable year-round choice. For open commercial poles, exposed HOA entry monuments, and any Midlands location that experiences regular afternoon thunderstorms, 2-ply polyester extends flag life significantly.

Upstate

Piedmont Plateau & Blue Ridge Foothills

Greenville · Spartanburg · Anderson · Rock Hill · Gaffney · Clemson

Greenville averages 7.5 mph annual wind (NOAA NCDC) and 51.0 inches annual precipitation (NOAA NCEI). The Upstate's Piedmont terrain — rolling hills, river valleys, and the Blue Ridge escarpment — provides more natural wind shelter than the coastal plain and Midlands. Tropical storm remnants occasionally reach the Upstate with damaging wind gusts, but the primary severe weather driver is spring and summer convection. For sheltered suburban Upstate settings — Greenville's established neighborhoods, Spartanburg's tree-lined residential areas, Clemson's campus — nylon is the right material for most of the year. Blue Ridge foothills sites above 1,500 ft and any exposed ridge-top commercial pole should fly 2-ply polyester year-round.

South Carolina Hurricane Season Protocol:

South Carolina's Atlantic coast faces direct hurricane threat during the June 1 – November 30 season. The state has recorded direct landfalls from Hugo (1989, Category 4), Floyd (1999, tropical storm at landfall), and multiple tropical storm events. When NWS Charleston or NWS Wilmington issues a Tropical Storm Watch, Tropical Storm Warning, Hurricane Watch, or Hurricane Warning for your county — lower the flag and secure the pole hardware before conditions deteriorate. Standard halyard hardware is not rated for sustained tropical storm winds of 39–73 mph or hurricane-force winds above 74 mph. Even polyester flags should be retrieved before any named tropical system makes landfall within 200 miles of your location.

U.S. Flag Display Protocol

Flying the South Carolina Flag with the U.S. Flag

Most South Carolinians fly their state flag alongside the U.S. flag — on the same pole or on adjacent poles. U.S. Flag Code and longstanding display protocol govern how the two flags are displayed together. Here are the five rules that apply to every combination across the Palmetto State.

Same Pole (One Halyard)

The U.S. flag must fly at the peak. The South Carolina flag hangs below it on the same halyard. Nothing may be flown above the U.S. flag on the same pole under any circumstances.

Separate Poles

The U.S. flag flies on the pole to its own right — the observer's left as they face the flags. Both poles should be the same height, or the U.S. flag pole should be taller. The U.S. flag is raised first and lowered last.

Size Rule

The South Carolina flag should be the same size as the U.S. flag when displayed together. Never fly a state flag larger than the U.S. flag on the same display.

Order of Precedence

On a three-pole display — common at SC state and county buildings — the U.S. flag occupies the center position at equal height. If heights differ, the U.S. flag goes highest.

Half-Staff

When the U.S. flag is at half-staff, the South Carolina flag should also be flown at half-staff. Raise the U.S. flag to the peak first, then lower to half. Reverse the order on retrieval.

Indoor Display

South Carolina Flag Sizes for Offices, Schools & Ceremonial Halls

Indoor South Carolina flags use a pole-hem sleeve rather than grommets, and are sized to the room's ceiling height rather than a pole-to-flag ratio. Gold fringe on three sides is traditional for formal settings — state offices, county courtrooms, The Citadel's barracks and ceremonial rooms, school auditoriums, and civic halls throughout South Carolina.

Room / Setting	Ceiling Height	Flag Size	Pole Length
Home office, small classroom	8 ft	3×5 ft	7 ft (leave clearance for finial)
Standard office, school hallway, civic club	9–10 ft	3×5 ft	8 ft
Formal office, county courtroom, state agency lobby	9–10 ft	4×6 ft	8–9 ft
Grand hall, auditorium, State House chamber, Citadel ceremonial	12 ft+	4×6 ft	9 ft

Gold fringe is optional but expected at South Carolina county courtrooms, the State House in Columbia, The Citadel's Bond Hall and other ceremonial settings, state agency conference rooms, and civic organizations such as the Sons of the American Revolution and Daughters of the American Revolution — both of which have significant South Carolina chapters. Indoor flags are not weatherproof and should never be mounted on an outdoor pole.

Complete South Carolina Flag Resource Center

Pair this size guide with our material guide (nylon vs. polyester for coastal and inland SC) and South Carolina flag history post.

Material Guide Flag History

Frequently Asked Questions

South Carolina Flag Size: Common Questions

What size South Carolina state flag do I need for a 20-foot pole?

A 3×5 ft South Carolina flag is the standard choice for a 20-foot residential in-ground pole. The flag's fly end (5 ft) equals one quarter of the pole height (20 ft ÷ 4 = 5 ft), satisfying the 25% rule exactly. If your pole is within 10 miles of the South Carolina coast or any tidal waterway — barrier islands, Sea Islands, Grand Strand, or Beaufort-area marshfront — use 2-ply polyester rather than nylon; salt air and high coastal UV degrade nylon significantly faster than standard inland conditions.

What size South Carolina flag fits a house-mount bracket?

For a standard 6-foot house-mount arm, choose a 2×3 ft flag. For an 8-foot arm on a two-story home, use a 3×5 ft flag. The flag's fly end should not extend beyond the tip of the mounting arm. In coastal South Carolina — Charleston peninsula, Sullivan's Island, Isle of Palms, Hilton Head, Kiawah, Pawleys Island — the salt-air, humidity, and UV environment makes polyester the preferred material even for house-bracket display.

What is the 25% rule for flag sizing?

The 25% rule states that the fly end (longer dimension) of a flag should equal approximately one quarter of the pole's height. A 20-foot pole calls for a 3×5 ft flag (5 ft fly ÷ 20 ft pole = 25%). A 25-foot pole calls for a 4×6 ft flag (6 ft fly ÷ 25 ft = 24%). Flags undersized for their poles look small and limp; flags oversized for their poles put excessive stress on hardware and grommets — a serious concern along South Carolina's coast during tropical storm and hurricane events when wind gusts can reach 60–100+ mph.

What size South Carolina flag do schools use?

K–12 schools across South Carolina most commonly use a 4×6 ft flag on a 25–30 foot pole. For university campuses — University of South Carolina, Clemson, College of Charleston, The Citadel, Coastal Carolina University, Winthrop University — a 5×8 ft flag on a 35–40 foot pole provides the campus visibility those poles require. Indoor classroom and hallway display uses a 3×5 ft flag on a 7–8 ft pole with pole-hem sleeve.

Does South Carolina's climate affect which size flag to choose?

Climate affects material choice more than size in South Carolina, but coastal exposure is relevant to both. For any pole within 10 miles of tidal salt water — the entire Lowcountry from Myrtle Beach to Hilton Head and every Sea Island — fly 2-ply polyester year-round and retrieve the flag before any NWS tropical watch or warning. Inland Midlands and Upstate sites can fly nylon in sheltered settings but should upgrade to polyester for any exposed commercial or open-lot pole.

How do I pair a South Carolina flag with a U.S. flag?

On the same pole, the U.S. flag must fly at the peak — the South Carolina flag below it on the same halyard. On separate poles, the U.S. flag goes on its own right (the observer's left) at the same height or higher. Both flags should be the same size. When the U.S. flag is at half-staff, the South Carolina flag should also be at half-staff — raise the U.S. flag to the peak first, then lower to half-staff position.

What size South Carolina flag is used indoors?

For rooms with 8-foot ceilings, use a 3×5 ft South Carolina flag on a 7-foot indoor pole with pole-hem sleeve. For 9–10 foot ceilings (standard for SC school hallways and offices), use a 3×5 on an 8-foot pole or a 4×6 on an 8–9 foot pole. Grand halls, auditoriums, State House chambers, and Citadel ceremonial spaces use a 4×6 flag on a 9-foot pole. Gold fringe is traditional for courtrooms, state offices, civic organizations, and any formal setting where military or ceremonial flags are also present.

Sources

NOAA NCDC Comparative Climatic Data — Charleston 8.8 mph, Myrtle Beach 9.4 mph, Columbia 7.1 mph, Greenville 7.5 mph annual average wind speed · NOAA NCEI U.S. Climate Normals 1991–2020 — Charleston 52.4 in. / 114 days, Myrtle Beach 51.4 in., Columbia 49.2 in., Greenville 51.0 in. annual precipitation · NOAA 2022 South Carolina State Climate Summary (statesummaries.ncics.org) — tropical storm and hurricane track history, severe thunderstorm events, coastal exposure data · NOAA NCEI Storm Events Database — Hurricane Hugo (1989) 135 mph sustained / 160 mph gusts at landfall near Charleston; Hurricane Dorian (2019) tropical storm conditions Horry–Beaufort counties · National Hurricane Center, Hurricane Hugo (1989) post-storm report · South Carolina Department of Natural Resources — Lowcountry coastal geography, Sea Islands tidal classification · U.S. Flag Code, Title 4 U.S.C. §§ 1–10 — display protocol for paired U.S. and state flags

Shop South Carolina State Flags

Fly the Palmetto State Flag with American-Made Quality

Every South Carolina flag from Tidmore is Made in the USA, FMAA-certified, and available in the size and material right for your location — from an inland Columbia yard to a Hilton Head oceanfront pole.

South Carolina Nylon Flag

200-denier nylon — lightweight, vivid, fast-drying. The right everyday choice for sheltered Midlands and Upstate residential settings away from salt air.

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South Carolina Polyester Flag

Heavy 2-ply polyester built for SC's Lowcountry coast, Sea Islands, Grand Strand, and any exposed pole within range of salt air and hurricane season.

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South Carolina Indoor Flag with Fringe

Nylon with pole-hem sleeve and gold rayon fringe. Traditional for SC courtrooms, the State House, The Citadel, and civic ceremonial settings statewide.

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South Carolina Presentation Set

Complete set: fringed nylon flag, oak pole, floor stand, and spear finial. Ready for SC offices, universities, civic clubs, and formal institutional settings.

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U.S. + South Carolina Nylon Bundle

Fly both flags in matching nylon — correct protocol sizing for paired residential or commercial display in sheltered inland SC locations.

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U.S. + South Carolina Polyester Bundle

Heavy-duty 2-ply polyester pair for SC's coastal Lowcountry, Grand Strand resort row, Sea Island properties, and any exposed hurricane-belt location.

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