What city is 31520 in?

31520 is a Brunswick, GA mailing address. By land area, 53% lies inside Brunswick and 37% lies inside Dock Junction; the rest is outside any Census-defined city or community.

What is the population of 31520?

About 22,313 people (±1,352), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 22,726.

What is the median household income in 31520?

$40,071 (±$1,968), 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 31520?

15 USPS carrier routes with 9,446 residential and 1,622 business mailboxes (11,065 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 31520?

The closest, measured center to center: 31524 (4.4 mi), 31523 (8 mi, Sterling), 31527 (8.3 mi, Jekyll Island), 31525 (10.1 mi, Country Club Estates), 31522 (10.2 mi, St. Simons) and 31561 (10.7 mi).

31520 ZIP Code, Brunswick, GA

31520 is a ZIP code in Brunswick, Georgia in Glynn County. It covers 20 square miles of land. The closest ZIP codes are 31524, 31523 and 31527. 22,313 people live here in 8,968 households. At about 1,107 people per square mile it has suburban density, and owners and renters are mixed (46% own). Median household income is $40,071, well below the Georgia median of $77,353.

Quick facts

Mailing city: Brunswick, GA
County: Glynn County
Land area: 20 sq mi
Population: 22,313
Median household income: $40,071
Carrier routes: 15 (9,446 homes)

Key figures

Measure	Value
Residents	22,313
Households	8,968
Median household income	$40,071
Income per person	$26,808
Median age	38.4
Homeowners	45.5%
Median home value	$147,500
Median rent	$983
Bachelor's degree or higher	17.3%
Average commute (minutes)	16.8
Households with kids under 18	30.3%
Moved in the past year	15.4%
Below the poverty line	29.8%
Broadband internet	80.1%
Speak a non-English language at home	14.0%

Household income

% of households	Value
<$10K	9.7%
$10–15K	5.5%
$15–25K	16.2%
$25–35K	10.6%
$35–50K	19.1%
$50–75K	15.8%
$75–100K	10.2%
$100–150K	6.4%
$150–200K	2.6%
$200K+	3.8%

Age

% of all residents	Value
<10	11.2%
10–19	17.2%
20–24	4.0%
25–34	12.3%
35–44	13.5%
45–54	11.3%
55–64	11.9%
65–74	10.2%
75+	8.4%

Tenure

% of housing units	Value
Owned, with mortgage	16.0%
Owned outright	22.7%
Rented	46.1%
Vacant	15.2%

Type of building

% of housing units	Value
Detached house	61.3%
Townhome	5.9%
2–4 units	11.6%
5–19 units	5.6%
20+ units	4.1%
Mobile / other	11.4%

Businesses in 31520

925 business establishments with 11,351 employees (ZIP Codes Business Patterns 2023).

Retail Trade: 171
Health Care and Social Assistance: 146
Other Services (except Public Administration): 103
Professional, Scientific, and Technical Services: 86
Accommodation and Food Services: 85
Construction: 73
Finance and Insurance: 54
Administrative and Support and Waste Management and Remediation Services: 45

EDDM carrier routes

31520 has 15 USPS carrier routes with 9,446 residential and 1,622 business mailboxes. Open the EDDM route map.

Carrier routes in 31520

31520 has 15 USPS carrier routes (15 city (C)) with 9,446 residential and 1,622 business mailboxes. Routes range from 294 homes (C040) to 927 homes (C005); the median route has 618 homes. The Census counted 8,968 households in 31520 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	3
500–749	7
750–999	5
1,000–1,499	0
1,500+	0

Best routes in 31520 for…

Most businesses

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

Route C002 — USPS business mailboxes 292, 340 homes
Route C037 — USPS business mailboxes 208, 532 homes
Route C001 — USPS business mailboxes 180, 536 homes
Route C005 — USPS business mailboxes 136, 927 homes
Route C013 — USPS business mailboxes 125, 618 homes

Select these 5 routes on the route map

Every carrier route in 31520

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	536	180	$29,738	—	—	—
C002	City	340	292	$15,881	—	—	—
C003	City	594	78	$19,899	—	—	—
C004	City	668	20	$41,795	—	—	—
C005	City	927	136	$26,882	—	—	—
C007	City	420	84	$50,464	—	—	—
C008	City	679	85	$26,882	—	—	—
C009	City	849	30	$37,806	—	—	—
C013	City	618	125	$60,457	—	—	—
C014	City	838	122	$30,659	—	—	—
C015	City	560	73	$50,464	—	—	—
C019	City	780	112	$46,207	—	—	—
C021	City	811	66	$12,372	—	—	—
C037	City	532	208	$50,464	—	—	—
C040	City	294	11	$26,882	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 31520 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

31524 (4.4 mi)
31523 — Sterling CDP, GA (8 mi)
31527 — Jekyll Island CDP, GA (8.3 mi)
31525 — Country Club Estates CDP, GA (10.1 mi)
31522 — St. Simons CDP, GA (10.2 mi)
31561 (10.7 mi)
31565 — Waverly CDP, GA (11.8 mi)
31305 — Darien city, GA (14.6 mi)

Areas that include 31520

Brunswick, GA ZIP codes — 4 ZIP codes
Dock Junction, GA ZIP codes — 2 ZIP codes
Glynn County ZIP codes — 8 ZIP codes
Georgia ZIP code data

Where it ranks

Mail every home in 31520

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) 31520, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 31520 in?: 31520 is a Brunswick, GA mailing address. By land area, 53% lies inside Brunswick and 37% lies inside Dock Junction; the rest is outside any Census-defined city or community.
What county is 31520 in?: 31520 is in Glynn County.
What is the population of 31520?: About 22,313 people (±1,352), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 22,726.
What is the median household income in 31520?: $40,071 (±$1,968), 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 31520?: 15 USPS carrier routes with 9,446 residential and 1,622 business mailboxes (11,065 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 31520?: The closest, measured center to center: 31524 (4.4 mi), 31523 (8 mi, Sterling), 31527 (8.3 mi, Jekyll Island), 31525 (10.1 mi, Country Club Estates), 31522 (10.2 mi, St. Simons) and 31561 (10.7 mi).

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