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ZIP Code 99402, Washington

ZIP Code 99402 profile, demographic data, and geographic information.

ZCTA5 99402 is a 5-digit ZIP Code area located in Asotin County, Washington. As of official census estimates, it has a reported population of 1,557. The land area covers 336.35 sq mi. [1]

Demographics & Population

Demographic Metric Estimate / Count Margin of Error Survey Period / Source
Total Population 1,557 ±324 2020-2024 / Census ACS 5-Year 2024
Median Age 51.2 yrs ±8.8 2020-2024 / Census ACS 5-Year 2024
Total Households 676 ±131 2020-2024 / Census ACS 5-Year 2024
Source: U.S. Census Bureau (PEP, ACS 5-Year).

Housing & Real Estate Profile

Housing Metric Estimate / Value Margin of Error
Total Housing Units 817 ±126
Occupied Housing Units 676 ±131
Vacant Housing Units 141 ±71
Median Home Value $339,800 ±$112,895
Median Gross Rent $1,157 ±$168
Source: U.S. Census Bureau ACS 5-Year (2020-2024).

Economy & Workforce

Economic Metric Estimate / Value Margin of Error
Median Household Income $78,906 ±$6,900
Per Capita Income $51,992 ±$14,327
Poverty Rate 6.7% ±4.6%
Population Below Poverty Level 104 ±75
Unemployment Rate 2.8% ±3.4%
Civilian Labor Force, Employed 561 ±162
Broadband Internet Rate 90.4% ±7.2%
Source: U.S. Census Bureau ACS 5-Year (2020-2024).

Local Government & Public Administration

Authoritative general-purpose local government units serving this area U.S. Census Bureau GUS (2026) / GMAF
Government Unit Unit Type Jurisdiction Role Contact / Address
GUS Population: 22,523 (2024)
ID: 176792
County Official County Government
Contact: CLERK OF BOARD
PO BOX 250, ASOTIN WA 99402-0250

Education

Listing 10 local institutions (NCES 2024-2025) External reference via K12Guides
Institution Type Grades Location
Regular School Nearby PK-05 ASOTIN, WA
Regular School Nearby 06-12 ASOTIN, WA
Regular School Nearby 09-12 Clarkston, WA
Alternative School Nearby KG-12 Clarkston, WA
Alternative School Nearby 07-12 Clarkston, WA
Alternative School Nearby 11-12 Clarkston, WA
Regular School Nearby KG-06 Clarkston, WA
Regular School Nearby KG-06 Clarkston, WA
Regular School Nearby KG-06 Clarkston, WA
Regular School Nearby 07-08 Clarkston, WA
Source: k12guides.com.

Community Facilities & Infrastructure

Displaying 7 civic institutions across 2 datasets queried CMS • IPEDS • IMLS
Facility Name Category Relationship Address / Location Contact
Lewis-Clark State College
College 20.4 mi away 500 8th Ave, Lewiston, ID, 83501-2698
2087925272
HEIGHTS BRANCH LIBRARY
Library 17.5 mi away 2036 4TH AVE., CLARKSTON, WA, 99403
(509) 758-4601
Headmasters School of Hair Design
College Vocational 20.8 mi away 602 Main St, Lewiston, ID, 83501
2087431512
DOWNTOWN BRANCH
Library 19.8 mi away 417 SYCAMORE ST., CLARKSTON, WA, 99403
(509) 758-5454
LEWISTON BOOKMOBILE
Library 20.8 mi away 411 D ST, LEWISTON, ID, 83501 —
LEWISTON CITY PUBLIC
Library 20.8 mi away 411 D ST, LEWISTON, ID, 83501
(208) 798-2525
POMEROY (DENNY ASHBY) LIBRARY
Library 20.9 mi away 856 ARLINGTON ST, POMEROY, WA, 99347
(509) 843-3710
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.

Climate & Weather Observations

NOAA Monthly Climate Normals

Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at LEWISTON NEZ PERCE CO AP, ID US, located 19.2 miles from ZCTA5 99402. Local microclimates, topography, and elevation may cause municipal conditions to differ.
Month High (°F) Low (°F) Mean (°F) Precip (in) Snow (in)
January 42.1° 30.3° 36.2° 1.13" 2.7"
February 47.0° 31.7° 39.3° 1.04" 3.8"
March 55.1° 35.7° 45.4° 1.30" 0.8"
April 62.3° 40.7° 51.5° 1.44" 0.0"
May 72.0° 48.1° 60.0° 1.69" 0.0"
June 79.0° 54.0° 66.5° 1.25" 0.0"
July 90.8° 60.9° 75.8° 0.47" 0.0"
August 90.1° 60.3° 75.2° 0.51" 0.0"
September 79.5° 52.3° 65.9° 0.60" 0.0"
October 63.0° 42.0° 52.5° 1.08" 0.0"
November 48.7° 34.5° 41.6° 1.23" 1.3"
December 40.8° 29.5° 35.2° 1.13" 4.1"
Source: NOAA U.S. Climate Normals (1991–2020).

Local Weather Forecast

Weather forecast data is currently unavailable in the local cache.

Nearby Cities & Communities

Listing adjacent communities by spatial proximity (miles) Proximity discovery
Community Name Classification Distance Population
Anatone CDP CDP 12.0 mi —
Clarkston Heights-Vineland CDP CDP 16.3 mi —
Asotin city City 16.8 mi —
West Clarkston-Highland CDP CDP 18.6 mi —
Clarkston city City 19.7 mi —
Pataha CDP CDP 19.7 mi —

Sources & Data Provenance

  1. Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 99402. • Official Source Dataset →
  2. Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
  3. Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
  4. Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.