ZIP Codes of Saint Martin Parish, LA

Population & People
Population & People
Total Population
45,304
Household Income
Household Income
Median Income
$55,308
Housing
Housing
Total Housing Units
21,124
Business & Economy
Business & Economy
Total Businesses
727
Employment
Employment
Employment Rate
55.21%
Education
Education
Bachelor's Degree+
16.27%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 4 ZIPs in this parish.
Data Last Updated: June 1, 2026
ZIP Codes:4 ZIP Codes (2 Standard, 2 PO Box, 0 Unique) [See All]
Area Code:337
Timezone:Central (GMT -06:00)
Local Time:2:12:26 PM
Population:45,304 [See All]
FIPS:22099
CBSA:Lafayette, LA
Land Area:530 sq mi
Water Area:21 sq mi
Coordinates:30.2314, -91.7824
Quick Link:
https://www.zip-codes.com/county/la-saint-martin.asp
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Louisiana's #25 most populous parish
45,304 residents across 4 ZIPs — #25 of 64 Louisiana counties.

Standout ZIPs in this Parish


Most Populous
Breaux Bridge · 26,024 people
57.4% of county total
Highest Income
Breaux Bridge · $60,778 median
1.1× county average
Largest Land Area
Breaux Bridge · 278.7 sq mi
Spans the most ground
Fastest Growth
Saint Martinville · -1.0% (10-yr)
19,400 → 19,209 residents
Most Educated
Breaux Bridge · 16.8% bachelor's+
2,868 of 17,042 adults 25+

Things worth knowing about Saint Martin Parish


45,304 residents live across 4 ZIPs covering 530 sq mi, served by 4 distinct USPS-recognized cities.

Population moved from 45,997 to 45,304 from 2014 to 2024 — a -1.5% change. 0 ZIPs gained residents, 3 lost.

The parish's wealthiest ZIP 70517 (Breaux Bridge, $60,778 median) and poorest ZIP 70582 (Saint Martinville, $49,837) are 12.1 miles apart — a 1.2× income gap across local geography.

Median home values vary 1.0× across this parish — from $162,100 in 70517 (Breaux Bridge) to $163,300 in 70582 (Saint Martinville).

Density varies across the parish — from 76 people/sq mi in 70582 (Saint Martinville) to 93 in 70517 (Breaux Bridge).

Educational attainment ranges from 15.3% bachelor's+ in 70582 (Saint Martinville) to 16.8% in 70517 (Breaux Bridge) — the breadth of educational profiles across the area.

Within Louisiana, this is the #25 most populous of 64 parishes and ranks #30 for median household income .

Weighted by population, the typical household earns about $56,132 across the parish — reflecting what a typical resident sees, not a simple ZIP average.

16.3% of adults age 25+ hold a bachelor's degree or higher (5,015 of 30,833 reporting).

2 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this parish.

Stories about Saint Martin Parish


Big & sparse

A frontier parish — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
530
square miles
Avg density
85.4
people per sq mi
Population
45,304
across 4 ZIPs
Breaux Bridge
278.7 sq mi
26,024 residents
Saint Martinville
251.8 sq mi
19,209 residents

All ZIP Codes in Saint Martin Parish


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
70517Breaux BridgeStandard26,024$60,778278.7-1.3%
70582Saint MartinvilleStandard19,209$49,837251.8-1.0%
70519CadePO Box710.0-68.9%
70521CeciliaPO Box0.0

Adjacent & Nearby Counties