American Flag Sizes for House: What Fits Your Pole

A photo of a porch railing landed in our inbox with one sentence typed across the shrubs: "Will a 4x6 clear this?" We make Made in USA flags, and most of the sizing emails we get are about American flag sizes for house porches and yard poles. Short answer: no. A 3x5 clears that rail. A 4x6 slaps it every time the wind shifts.

TL;DR: Porch bracket? Go 3x5. Tight townhouse entry: 2.5x4. Porch barely wider than the door: 2x3. Twenty-foot yard pole takes 3x5 or 4x6. At 25 ft we run 5x8 (4x6 when the lot eats wind). Thirty feet: 5x8 or 6x10. Forty: 8x12. Fifty: 10x15. Sixty: 12x18. Annin, a major US flag maker, puts flag length at one quarter to one third of in-ground pole height. That is a guideline, not a law.

Quick pick

• Porch or wall bracket: Durable Patriot embroidered nylon 3x5 (or 2.5x4 if the entry is tight)
• 20 ft yard pole, light to moderate wind: Durable Patriot 3x5 or 4x6
• Windy site on a 20 ft yard pole: Everlast American Pride 2-ply spun polyester 3x5 (or 4x6 if the house sits far back)
• Size range we stock: Durable Patriot from 2x3 through 12x18. Everlast American Pride from 3x5 through 6x10 when the site is windy.

American Flag Sizes for House on a Bracket or House-Mounted Pole

Most porch sizing emails start the same way. Short pole. 5 ft or 6 ft, angled off a bracket by the door or on a porch column. Annin Flagmakers (US flag maker since 1847) pairs those residential mounts with a 2.5x4 banner or a 3x5 flag (Annin flag materials and sizes). We steer most porch buyers to 3x5. The Flag Code wants the union (the blue field of stars) at the peak of a staff projecting from a building (4 U.S.C. § 7(h)). We quote that line every time someone asks which way the stars go on a bracket.

Clearance decides the rest.

Stand at the bracket. Sweep an arm the way the flag will swing. Hit a railing? A shrub? Clip a downspout or soffit? Size down. The Flag Code wants nothing beneath the flag touching it (4 U.S.C. § 8(b)). Annin's chart is blunter: anything touching a flying flag shortens its life (Annin flag pole vs flag size chart PDF). Slap a rail every afternoon and the cloth wears at the fly end first. Our default on a 6 ft house pole is 3x5. Tight townhouse entry, or a 5 ft pole? 2.5x4. Porch barely wider than the door: 2x3, and we will tell you so. A 4x6 on a porch bracket? We talk people out of it. One extra foot of fly, and the bottom edge finds the rail the first windy night. Sheltered porch cloth? Nylon. Our Durable Patriot is embroidered high-grade nylon, light enough to lift when the air barely moves. Want the fabric side of that pick? We wrote it up in our nylon vs spun polyester guide.

In-Ground Pole Chart: Match Flag Length to Pole Height

For a freestanding pole in the yard, we use the same industry guideline Annin publishes: choose a flag length between one quarter and one third of the pole height (Annin flag pole vs flag size chart PDF). What size flag for a 20 ft pole? A quarter of 20 is 5 ft and a third is 6 ft 8 in, so 3x5 and 4x6 both fit. Measure from the ground to the top of the pole. Skip the buried section. The chart below gives one row per pole height, from Annin's page and PDF. The 2x3 and the windy-site 4x6 are our own calls.

3x5 vs 4x6: The Decision We Hear Most

Walk out to the curb and look back at the pole. Both sizes fit a 20 ft pole on Annin's chart, so this one is about what you see from there. Open lot that takes wind, or you want the easy replacement: 3x5. House set far back, or a sheltered yard where a 3x5 looks lost up top? 4x6. On a porch bracket, no.

Stuck? Start at 3x5.

When to Size Down for High Wind

Bigger flag, bigger sail. That load hits the grommets and snaps first, long before the pole feels it. Coastal lot? Hilltop with no windbreak? We take the smaller size in that row and fly it in Everlast. Our Everlast American Pride is 2-ply spun polyester. Feels closer to canvas than to light nylon. We keep it in 3x5 to 6x10 for those yards. The chart still applies. Smaller size, spun cloth. We've pulled a flag off a bracket with the fly end wrapped around the hardware after one rough afternoon. Our outdoor embroidered flag guide covers how we judge stitching once the size is set.

Size down before you size up.

Big Flags: 8x12 to 12x18

On a 40 ft pole the chart lands on 8x12. 10x15 belongs on a 50 ft pole and 12x18 on a 60 ft pole. We cut Durable Patriot in those sizes. Schools and dealerships ask for them. A house with a standard residential pole does not need them. If someone sends us a photo of a 25 ft yard pole and asks for a 10x15, we send them back to the chart. The cloth will fly; the hardware may not forgive it.

Printable Chart Note

Keep this one. Print this chart of American flag sizes for house poles and tape it inside the garage cabinet, next to the spare flag. A downloadable graphic comes in a later update. Until then, this is the same chart we pull up when a sizing photo lands in the inbox.

Order the Size That Fits

Match the mount first, then the wind. For a porch bracket, Durable Patriot 3x5 is our embroidered nylon house flag, with 2.5x4 and 2x3 for tight entries. For a 20 ft yard pole, step between Durable 3x5 and Durable 4x6, or switch to Everlast spun polyester when the site is windy. Every flag we make is 100% made in the USA. See the full lineup in our American flags collection.

Related guides from our blog: Nylon vs spun polyester American flag, How to choose a durable embroidered American flag for outdoors, and American flag gift for veterans.

Questions About American Flag Sizes for House

What is the standard house flag size?
3x5. That is the size we recommend most for porch brackets and for many 18 to 20 ft residential poles. On a tight entry we move to 2.5x4 or 2x3. On a tall in-ground pole we step up from there using the chart above.

Is a 3x5 too small for a 20 ft pole?
No. A 3x5 has a 5 ft fly length, which sits at the one-quarter mark of a 20 ft pole under the industry guideline we cite from Annin. If you want more presence from the street and the site is not especially windy, 4x6 is the usual step up.

Can a bigger flag damage a pole?
It can stress the hardware. A larger flag loads the grommets and snaps every time the wind hits, and the bracket feels it too. We have steered people off oversized porch flags for that reason. Stay inside the chart for your pole height, and take the smaller size for your pole on a windy lot.

What size flag for a porch bracket?
3x5 on a 6 ft house-mounted pole is our default. Use 2.5x4 on a 5 ft pole or a narrow facade. Check that the flag will clear the railing and the soffit through a full swing. A 4x6 belongs on a yard pole. Skip it for most porch brackets.

What size for a vertical wall display?
Measure the wall first. Hung vertically, a 3x5 runs 5 ft top to bottom and 3 ft across, and it should hang clear of the floor and whatever sits below it. Stars go at the top, on your left as you face the wall (4 U.S.C. § 7(i)). Same rule hung sideways. Narrow hallway? Go 2.5x4 or 2x3.

What size flag for a 25 ft flagpole?
5x8 is the chart match on Annin's PDF at 25 ft, and it is our pick for a sheltered yard where the house sits back from the street. Windy lot? We stay at 4x6 and switch to Everlast, the 2-ply spun polyester we keep for windy yards. Same pole, one size down.