39503 ZIP Code, Gulfport, MS

39503 is a ZIP code in Gulfport, Mississippi in Harrison County. It covers 114 square miles of land. The closest ZIP codes are 39501, 39560 and 39507. 55,059 people live here in 21,636 households, which puts it among the most populous 1% of Mississippi ZIP codes. With about 482 people per square mile it is lightly settled, and most homes are owner-occupied (71%). Median household income is $62,641, above the Mississippi median of $56,447.

Quick facts

Key figures

MeasureValue
Residents55,059
Households21,636
Median household income$62,641
Income per person$33,645
Median age38.3
Homeowners70.7%
Median home value$203,800
Median rent$1,140
Bachelor's degree or higher26.1%
Average commute (minutes)26.7
Households with kids under 1834.0%
Moved in the past year12.4%
Below the poverty line14.7%
Broadband internet91.6%
Speak a non-English language at home5.8%

Household income

% of householdsValue
<$10K5.2%
$10–15K2.9%
$15–25K7.9%
$25–35K7.4%
$35–50K13.2%
$50–75K22.1%
$75–100K12.9%
$100–150K16.5%
$150–200K6.2%
$200K+5.6%

Age

% of all residentsValue
<1013.0%
10–1913.9%
20–245.0%
25–3414.0%
35–4413.2%
45–5412.4%
55–6412.5%
65–749.6%
75+6.6%

Tenure

% of housing unitsValue
Owned, with mortgage41.8%
Owned outright23.7%
Rented26.9%
Vacant7.6%

Type of building

% of housing unitsValue
Detached house76.6%
Townhome1.7%
2–4 units6.0%
5–19 units6.8%
20+ units2.0%
Mobile / other7.0%

Businesses in 39503

1,121 business establishments with 17,667 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

39503 has 36 USPS carrier routes with 21,623 residential and 1,488 business mailboxes. Open the EDDM route map.

Carrier routes in 39503

39503 has 36 USPS carrier routes (36 rural (R)) with 21,623 residential and 1,488 business mailboxes. Routes range from 310 homes (R023) to 1,002 homes (R004); the median route has 569 homes. The Census counted 21,636 households in 39503 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4997
500–74923
750–9995
1,000–1,4991
1,500+0

Best routes in 39503 for…

Most businesses

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

  1. Route R029 — USPS business mailboxes 280, 374 homes
  2. Route R034 — USPS business mailboxes 226, 462 homes
  3. Route R023 — USPS business mailboxes 217, 310 homes
  4. Route R016 — USPS business mailboxes 149, 444 homes
  5. Route R004 — USPS business mailboxes 75, 1,002 homes

Select these 5 routes on the route map

Every carrier route in 39503

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
R001Rural63030$17,159———
R002Rural5472$80,132———
R003Rural5189$55,406———
R004Rural1,00275$81,939———
R005Rural57511$45,348———
R006Rural7123$46,939———
R007Rural78015$39,239———
R008Rural71819$71,694———
R009Rural55166$187,157———
R010Rural6913$46,939———
R011Rural41018$55,406———
R012Rural8342$54,601———
R013Rural5194$78,613———
R014Rural52916$92,695———
R015Rural59913$104,873———
R016Rural444149————
R017Rural56736$76,196———
R018Rural6492$45,348———
R019Rural63863$76,196———
R020Rural4522$76,258———
R021Rural72513$59,468———
R022Rural7804$39,239———
R023Rural310217$81,939———
R024Rural56213$85,199———
R025Rural57012$45,348———
R026Rural63117$104,873———
R027Rural5159$51,765———
R029Rural374280$23,650———
R030Rural51035$85,199———
R031Rural50617$55,406———
R032Rural5576$98,422———
R033Rural48923$38,790———
R034Rural462226$23,650———
R035Rural67171$76,196———
R036Rural7565$55,579———
R037Rural8402$76,196———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 39503 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

Areas that include 39503

Where it ranks

Mail every home in 39503

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) 39503, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 39503 in?
39503 is a Gulfport, MS mailing address. By land area, 30% lies inside Gulfport and 7% lies inside Lyman; the rest is outside any Census-defined city or community.
What county is 39503 in?
39503 is in Harrison County.
What is the population of 39503?
About 55,059 people (±1,968), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 53,643.
What is the median household income in 39503?
$62,641 (±$3,819), compared with $56,447 for Mississippi as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 39503?
36 USPS carrier routes with 21,623 residential and 1,488 business mailboxes (23,001 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 39503?
The closest, measured center to center: 39501 (6.5 mi, Gulfport), 39560 (7 mi, Long Beach), 39507 (8.2 mi, Gulfport), 39571 (8.7 mi, Pass Christian), 39574 (9.6 mi, Saucier) and 39532 (10.2 mi, Biloxi).

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