What city is 31329 in?

31329 is a Springfield, GA mailing address. By land area, 3% lies inside Springfield; the rest is outside any Census-defined city or community.

What is the population of 31329?

About 9,609 people (±902), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 9,760.

What is the median household income in 31329?

$78,483 (±$8,517), 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 31329?

6 USPS carrier routes with 4,050 residential and 172 business mailboxes (4,223 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 31329?

The closest, measured center to center: 31303 (5.8 mi), 31312 (8.1 mi, Guyton), 30446 (11.5 mi, Newington), 31326 (11.7 mi, Rincon), 29922 (11.9 mi) and 29943 (12.6 mi).

31329 ZIP Code, Springfield, GA

31329 is a ZIP code in Springfield, Georgia in Effingham County. It covers 92 square miles of land. The closest ZIP codes are 31303, 31312 and 30446. 9,609 people live here in 3,500 households. With about 104 people per square mile it is lightly settled, and most homes are owner-occupied (78%). Median household income is $78,483, close to the Georgia median of $77,353.

Quick facts

Mailing city: Springfield, GA
County: Effingham County
Land area: 92 sq mi
Population: 9,609
Median household income: $78,483
Carrier routes: 6 (4,050 homes)

Key figures

Measure	Value
Residents	9,609
Households	3,500
Median household income	$78,483
Income per person	$35,548
Median age	36.4
Homeowners	77.5%
Median home value	$252,800
Median rent	$1,123
Bachelor's degree or higher	20.4%
Average commute (minutes)	30.6
Households with kids under 18	28.0%
Moved in the past year	10.8%
Below the poverty line	7.4%
Broadband internet	76.2%
Speak a non-English language at home	2.8%

Household income

% of households	Value
<$10K	4.9%
$10–15K	2.6%
$15–25K	3.6%
$25–35K	6.6%
$35–50K	9.9%
$50–75K	19.8%
$75–100K	15.6%
$100–150K	20.7%
$150–200K	10.6%
$200K+	5.7%

Age

% of all residents	Value
<10	13.2%
10–19	11.0%
20–24	9.3%
25–34	14.1%
35–44	15.0%
45–54	13.2%
55–64	12.9%
65–74	6.3%
75+	5.1%

Tenure

% of housing units	Value
Owned, with mortgage	51.1%
Owned outright	22.3%
Rented	21.3%
Vacant	5.3%

Type of building

% of housing units	Value
Detached house	70.9%
Townhome	2.2%
2–4 units	3.3%
5–19 units	0.6%
20+ units	1.7%
Mobile / other	21.4%

Businesses in 31329

162 business establishments with 1,780 employees (ZIP Codes Business Patterns 2023).

Retail Trade: 22
Accommodation and Food Services: 20
Other Services (except Public Administration): 20
Construction: 19
Health Care and Social Assistance: 17
Professional, Scientific, and Technical Services: 14
Finance and Insurance: 12
Administrative and Support and Waste Management and Remediation Services: 8

EDDM carrier routes

31329 has 6 USPS carrier routes with 4,050 residential and 172 business mailboxes. Open the EDDM route map.

Carrier routes in 31329

31329 has 6 USPS carrier routes (6 rural (R)) with 4,050 residential and 172 business mailboxes. Routes range from 571 homes (R002) to 892 homes (R005); the median route has 655 homes. The Census counted 3,500 households in 31329 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

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

Best routes in 31329 for…

Most businesses

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

Route R004 — USPS business mailboxes 92, 664 homes
Route R006 — USPS business mailboxes 28, 702 homes
Route R005 — USPS business mailboxes 24, 892 homes
Route R003 — USPS business mailboxes 15, 646 homes
Route R002 — USPS business mailboxes 9, 571 homes

Select these 5 routes on the route map

Every carrier route in 31329

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
R001	Rural	575	4	$56,584	—	—	—
R002	Rural	571	9	$56,584	—	—	—
R003	Rural	646	15	$56,584	—	—	—
R004	Rural	664	92	$75,516	—	—	—
R005	Rural	892	24	$64,701	—	—	—
R006	Rural	702	28	$64,701	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 31329 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

31303 (5.8 mi)
31312 — Guyton city, GA (8.1 mi)
30446 — Newington town, GA (11.5 mi)
31326 — Rincon city, GA (11.7 mi)
29922 (11.9 mi)
29943 (12.6 mi)
30449 — Oliver city, GA (12.7 mi)
30415 — Brooklet city, GA (16.4 mi)

Areas that include 31329

Springfield, GA ZIP codes — 1 ZIP code
Effingham County ZIP codes — 8 ZIP codes
Georgia ZIP code data

Where it ranks

Mail every home in 31329

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) 31329, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 31329 in?: 31329 is a Springfield, GA mailing address. By land area, 3% lies inside Springfield; the rest is outside any Census-defined city or community.
What county is 31329 in?: 31329 is in Effingham County.
What is the population of 31329?: About 9,609 people (±902), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 9,760.
What is the median household income in 31329?: $78,483 (±$8,517), 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 31329?: 6 USPS carrier routes with 4,050 residential and 172 business mailboxes (4,223 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 31329?: The closest, measured center to center: 31303 (5.8 mi), 31312 (8.1 mi, Guyton), 30446 (11.5 mi, Newington), 31326 (11.7 mi, Rincon), 29922 (11.9 mi) and 29943 (12.6 mi).

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