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zipcodes.pro — STATE/LA/COUNTY/ST-TAMMANY

St. Tammany Parish, LA ZIP codes

There are 20 ZIP codes in St. Tammany Parish, LA, in 12 towns, from 70420 to 70471. The largest are 70433 (Covington), 70458 (Slidell) and 70461 (Slidell).

The parish seat is Covington.

ZIP codes
20
Towns
12
Parish seat
Covington
County FIPS
22103
Population
272,421
Median household income
$81,202
Land area
845 sq mi
Area code
985

St. Tammany Parish ZIP codes by town

Covington (parish seat)
70433, 70434, 70435

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of St. Tammany Parish ZIP codes

7042070431704337043470435704377044570447704487045270457704587045970460704617046370464704697047070471

The ZIP codes of St. Tammany Parish, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

St. Tammany Parish in numbers

About 272,421 people live in St. Tammany Parish, in 105,082 households, the 4th most populous of Louisiana's 64 counties. The median household income is $81,202 a year, 34% above the Louisiana median of $60,756 (US: $80,734). The median owner-occupied home is valued at $284,000 (31% above the Louisiana median), and median gross rent is $1,332 a month. The median age is 40.5; 37.7% of adults 25 and over hold a bachelor's degree or higher (27.0% across Louisiana); the average commute takes 32 minutes.

Population272,421St. Tammany272,421
Households105,082St. Tammany105,082
Median age40.5St. Tammany40.5Louisiana38.0US 38.9
Median household income$81,202St. Tammany$81,202Louisiana$60,756US $80,734
Median home value$284,000St. Tammany$284,000Louisiana$216,500US $332,700
Median gross rent$1,332St. Tammany$1,332Louisiana$1,064US $1,413
Bachelor's degree or higher37.7%St. Tammany37.7%Louisiana27.0%US 35.7%
Mean commute31.5 minSt. Tammany31.5 minLouisiana25.7 minUS 26.4 min
Population density322 / sq miSt. Tammany322 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in St. Tammany Parish

Largest towns in St. Tammany Parish
TownZIP codesPopulation
Slidell 5 28,561
Mandeville 3 12,946
Covington 3 11,658
Lacombe 1 6,310
Bush 1 5,769
Abita Springs 1 2,699
Pearl River 1 2,614
Madisonville 1 869
Folsom 1 709
Sun 1 381
Saint Benedict 1 143
Talisheek 1 109

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with St. Tammany Parish.

Not sure you are in St. Tammany Parish? What county am I in? answers from your location, near a county line included.

Every ZIP code in St. Tammany Parish, with figures

ZIP codes in St. Tammany Parish
ZIP City Type Population Median income Median home
70420 Abita Springs , LA Standard 7,950 $78,171 $290,700
70431 Bush , LA Standard 5,769 $69,813 $245,500
70433 Covington , LA Standard 41,876 $81,241 $325,000
70434 Covington , LA No street area — — —
70435 Covington , LA Standard 22,475 $80,926 $282,300
70437 Folsom , LA Standard 8,030 $61,280 $299,000
70445 Lacombe , LA Standard 9,288 $78,394 $208,100
70447 Madisonville , LA Standard 17,897 $122,574 $393,200
70448 Mandeville , LA Standard 26,338 $95,682 $340,300
70452 Pearl River , LA Standard 12,650 $62,917 $233,400
70457 Saint Benedict , LA Standard 143 — —
70458 Slidell , LA Standard 39,034 $72,843 $237,700
70459 Slidell , LA No street area — — —
70460 Slidell , LA Standard 21,669 $62,565 $192,800
70461 Slidell , LA Standard 34,808 $89,003 $273,500
70463 Sun , LA Standard 99 $25,625 $134,400
70464 Talisheek , LA Standard 109 — —
70469 Slidell , LA No street area — — —
70470 Mandeville , LA No street area — — —
70471 Mandeville , LA Standard 24,199 $96,501 $394,300

Cite this page

zipcodes.pro. “St. Tammany Parish ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/la/county/st-tammany

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