What city is 31522 in?

31522 is a Saint Simons Island, GA mailing address. By land area, 31% lies inside St. Simons; the rest is outside any Census-defined city or community.

What is the population of 31522?

About 17,780 people (±856), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 16,892.

What is the median household income in 31522?

$108,632 (±$6,528), compared with $77,353 for Georgia as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 31522?

19 USPS carrier routes with 11,095 residential and 818 business mailboxes (11,997 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 31522?

The closest, measured center to center: 31561 (3.8 mi), 31524 (7.8 mi), 31305 (7.9 mi, Darien), 31520 (10.2 mi, Brunswick), 31525 (11.7 mi, Country Club Estates) and 31327 (11.9 mi).

31522 ZIP Code, Saint Simons Island, GA

31522 is a ZIP code in Saint Simons Island, Georgia in Glynn County. It covers 53 square miles of land. The closest ZIP codes are 31561, 31524 and 31305. 17,780 people live here in 8,574 households. With about 333 people per square mile it is lightly settled, and most homes are owner-occupied (85%). Median household income is $108,632, above the Georgia median of $77,353; the median age is 59.9, older than most ZIP codes.

Quick facts

Mailing city: Saint Simons Island, GA
County: Glynn County
Land area: 53 sq mi
Population: 17,780
Median household income: $108,632
Carrier routes: 19 (11,095 homes)

Key figures

Measure	Value
Residents	17,780
Households	8,574
Median household income	$108,632
Income per person	$75,759
Median age	59.9
Homeowners	84.8%
Median home value	$571,100
Median rent	$1,851
Bachelor's degree or higher	57.5%
Average commute (minutes)	18
Households with kids under 18	13.8%
Moved in the past year	10.4%
Below the poverty line	4.8%
Broadband internet	95.1%
Speak a non-English language at home	4.2%

Household income

% of households	Value
<$10K	3.7%
$10–15K	1.5%
$15–25K	3.5%
$25–35K	5.2%
$35–50K	6.7%
$50–75K	14.0%
$75–100K	10.6%
$100–150K	19.9%
$150–200K	13.5%
$200K+	21.5%

Age

% of all residents	Value
<10	7.8%
10–19	6.4%
20–24	3.0%
25–34	7.8%
35–44	8.1%
45–54	10.2%
55–64	17.1%
65–74	23.3%
75+	16.2%

Tenure

% of housing units	Value
Owned, with mortgage	36.6%
Owned outright	23.6%
Rented	10.5%
Vacant	29.4%

Type of building

% of housing units	Value
Detached house	62.8%
Townhome	6.7%
2–4 units	6.4%
5–19 units	12.6%
20+ units	9.5%
Mobile / other	2.0%

Businesses in 31522

871 business establishments with 6,216 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 132
Retail Trade: 108
Accommodation and Food Services: 98
Real Estate and Rental and Leasing: 96
Construction: 91
Other Services (except Public Administration): 75
Health Care and Social Assistance: 68
Finance and Insurance: 63

EDDM carrier routes

31522 has 19 USPS carrier routes with 11,095 residential and 818 business mailboxes. Open the EDDM route map.

Carrier routes in 31522

31522 has 19 USPS carrier routes (13 city (C), 6 rural (R)) with 11,095 residential and 818 business mailboxes. Routes range from 381 homes (C028) to 1,022 homes (C024); the median route has 570 homes. The Census counted 8,574 households in 31522 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	6
500–749	11
750–999	1
1,000–1,499	1
1,500+	0

Best routes in 31522 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route C034 — USPS business mailboxes 135, 422 homes
Route C029 — USPS business mailboxes 127, 563 homes
Route C047 — USPS business mailboxes 122, 744 homes
Route C041 — USPS business mailboxes 104, 382 homes
Route C038 — USPS business mailboxes 76, 413 homes

Select these 5 routes on the route map

Every carrier route in 31522

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C017	City	452	1	$83,971	—	—	—
C023	City	550	2	$102,980	—	—	—
C024	City	1,022	36	$63,184	—	—	—
C028	City	381	67	$91,156	—	—	—
C029	City	563	127	$69,460	—	—	—
C033	City	637	1	$104,607	—	—	—
C034	City	422	135	$63,184	—	—	—
C038	City	413	76	$102,980	—	—	—
C041	City	382	104	$91,156	—	—	—
C043	City	904	40	$83,971	—	—	—
C044	City	481	13	$119,411	—	—	—
C046	City	591	43	$119,411	—	—	—
C047	City	744	122	$63,184	—	—	—
R004	Rural	516	0	$104,932	—	—	—
R009	Rural	628	1	$104,932	—	—	—
R014	Rural	570	6	$63,184	—	—	—
R018	Rural	596	3	$69,906	—	—	—
R023	Rural	623	34	$120,434	—	—	—
R028	Rural	620	7	$104,932	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 31522 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

31561 (3.8 mi)
31524 (7.8 mi)
31305 — Darien city, GA (7.9 mi)
31520 — Brunswick city, GA (10.2 mi)
31525 — Country Club Estates CDP, GA (11.7 mi)
31327 (11.9 mi)
31527 — Jekyll Island CDP, GA (13.3 mi)
31523 — Sterling CDP, GA (16.5 mi)

Areas that include 31522

St. Simons, GA ZIP codes — 1 ZIP code
Saint Simons Island, GA ZIP codes — 1 ZIP code
Glynn County ZIP codes — 8 ZIP codes
Georgia ZIP code data

Where it ranks

Mail every home in 31522

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 31522, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 31522 in?: 31522 is a Saint Simons Island, GA mailing address. By land area, 31% lies inside St. Simons; the rest is outside any Census-defined city or community.
What county is 31522 in?: 31522 is in Glynn County.
What is the population of 31522?: About 17,780 people (±856), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 16,892.
What is the median household income in 31522?: $108,632 (±$6,528), compared with $77,353 for Georgia as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 31522?: 19 USPS carrier routes with 11,095 residential and 818 business mailboxes (11,997 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 31522?: The closest, measured center to center: 31561 (3.8 mi), 31524 (7.8 mi), 31305 (7.9 mi, Darien), 31520 (10.2 mi, Brunswick), 31525 (11.7 mi, Country Club Estates) and 31327 (11.9 mi).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.