Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/WA/COUNTY/ADAMS

Adams County, WA ZIP codes

Adams County, WA has 5 ZIP codes, in 5 towns: 99344, 99169, 99341, 99371 and 99105. 1 more crosses into it from a neighbouring county: 99159.

The county seat is Ritzville.

ZIP codes
5
Partly in it
1 more
Towns
5
County seat
Ritzville
County FIPS
53001
Population
20,800
Median household income
$66,136
Land area
1,925 sq mi
Metro area
Othello

Adams County ZIP codes by town

Ritzville (county seat)
99169

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.

ZIP codes partly in Adams County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Adams County.

Map of Adams County ZIP codes

9910599169993419934499371

The ZIP codes of Adams County, 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.

Adams County in numbers

About 20,800 people live in Adams County, in 6,288 households, the 31st most populous of Washington's 39 counties. The median household income is $66,136 a year, 33% below the Washington median of $98,141 (US: $80,734). The median owner-occupied home is valued at $273,300 (52% below the Washington median), and median gross rent is $877 a month. The median age is 29.3; 15.7% of adults 25 and over hold a bachelor's degree or higher (39.6% across Washington); the average commute takes 22 minutes.

Population20,800Adams20,800
Households6,288Adams6,288
Median age29.3Adams29.3Washington38.3US 38.9
Median household income$66,136Adams$66,136Washington$98,141US $80,734
Median home value$273,300Adams$273,300Washington$564,600US $332,700
Median gross rent$877Adams$877Washington$1,760US $1,413
Bachelor's degree or higher15.7%Adams15.7%Washington39.6%US 35.7%
Mean commute22.2 minAdams22.2 minWashington26.6 minUS 26.4 min
Population density11 / sq miAdams11 / 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 Adams County

Largest towns in Adams County
TownZIP codesPopulation
Othello 1 8,795
Ritzville 1 1,855
Lind 1 565
Washtucna 1 292
Benge 1 41

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 Adams County.

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

Every ZIP code in Adams County, with figures

ZIP codes in Adams County
ZIP City Type Population Median income Median home
99105 Benge , WA Standard 41 $51,250 $46,500
99169 Ritzville , WA Standard 2,587 $66,061 $228,400
99341 Lind , WA Standard 765 $68,558 $238,200
99344 Othello , WA Standard 19,534 $64,888 $281,900
99371 Washtucna , WA Standard 394 $77,500 $217,500

Cite this page

zipcodes.pro. “Adams County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/wa/county/adams

Underlying data is public domain or openly licensed — sources, vintages and licences.