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ZIP Code 99135, Washington

ZIP Code 99135 profile, demographic data, and geographic information.

ZCTA5 99135 is a 5-digit ZIP Code area located in Grant County, Washington. As of official census estimates, it has a reported population of 395. The land area covers 173.58 sq mi. [1]

Demographics & Population

Demographic Metric Estimate / Count Margin of Error Survey Period / Source
Total Population 395 ±191 2020-2024 / Census ACS 5-Year 2024
Median Age 35.5 yrs ±16.9 2020-2024 / Census ACS 5-Year 2024
Total Households 167 ±70 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 195 ±71
Occupied Housing Units 167 ±70
Vacant Housing Units 28 ±21
Median Home Value Suppressed —
Median Gross Rent $393 ±$135
Source: U.S. Census Bureau ACS 5-Year (2020-2024).

Economy & Workforce

Economic Metric Estimate / Value Margin of Error
Median Household Income $80,469 ±$48,363
Per Capita Income $33,187 ±$10,174
Poverty Rate 3.5% ±3.1%
Population Below Poverty Level 14 ±14
Unemployment Rate 0.6% ±1.2%
Civilian Labor Force, Employed 160 ±85
Broadband Internet Rate 92.2% ±16.2%
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: 104,717 (2024)
ID: 136095
County Official County Government
Contact: CLERK OF THE BOARD, ADMINISTRATIVE A
PO BOX 37, EPHRATA WA 98823-0037

Education

Listing 4 local institutions (NCES 2024-2025) External reference via K12Guides
Institution Type Grades Location
Regular School Nearby 09-12 Coulee City, WA
Regular School Nearby KG-08 ALMIRA, WA
Regular School Nearby KG-05 COULEE CITY, WA
Regular School Nearby 06-08 COULEE CITY, WA
Source: k12guides.com.

Community Facilities & Infrastructure

Displaying 3 civic institutions across 1 datasets queried CMS • IPEDS • IMLS
Facility Name Category Relationship Address / Location Contact
COULEE CITY PUBLIC LIBRARY
Library 10.0 mi away 405 W MAIN ST, COULEE CITY, WA, 99115
(509) 632-8751
WILBUR (HESSELTINE) PUBLIC LIBRARY
Library 19.2 mi away 14 NW DIVISION, WILBUR, WA, 99185
(509) 647-5828
GRAND COULEE PUBLIC LIBRARY
Library 19.6 mi away 225 FEDERAL ST, GRAND COULEE, WA, 99133
(509) 663-0972
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 HARTLINE, WA US, located 2.1 miles from ZCTA5 99135. Local microclimates, topography, and elevation may cause municipal conditions to differ.
Month High (°F) Low (°F) Mean (°F) Precip (in) Snow (in)
January 32.4° 22.6° 27.5° 1.34" —
February 39.9° 25.3° 32.6° 0.72" —
March 49.9° 30.5° 40.2° 1.04" —
April 59.5° 35.7° 47.6° 0.81" —
May 69.5° 43.7° 56.6° 1.09" —
June 76.4° 49.3° 62.8° 0.89" —
July 86.3° 56.9° 71.6° 0.55" —
August 85.9° 56.6° 71.2° 0.38" —
September 76.3° 48.0° 62.2° 0.34" —
October 60.4° 37.7° 49.0° 0.91" —
November 43.4° 29.4° 36.4° 1.25" —
December 32.7° 22.6° 27.6° 1.57" —
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
Hartline town Town 2.1 mi —
Almira town Town 7.9 mi —
Banks Lake South CDP CDP 8.8 mi —
Coulee City town Town 9.8 mi —
Wilson Creek town Town 16.5 mi —
Electric City city City 17.5 mi —

Sources & Data Provenance

  1. Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 99135. • 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.