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ZIP Code 99133, Washington

ZIP Code 99133 profile, demographic data, and geographic information.

ZCTA5 99133 is a 5-digit ZIP Code area located in Douglas County / Grant County / Lincoln County, Washington. As of official census estimates, it has a reported population of 1,115. The land area covers 182.48 sq mi. [1]

Demographics & Population

Demographic Metric Estimate / Count Margin of Error Survey Period / Source
Total Population 1,115 ±173 2020-2024 / Census ACS 5-Year 2024
Median Age 49.4 yrs ±6.4 2020-2024 / Census ACS 5-Year 2024
Total Households 536 ±97 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 731 ±132
Occupied Housing Units 536 ±97
Vacant Housing Units 195 ±104
Median Home Value $229,900 ±$23,351
Median Gross Rent $591 ±$341
Source: U.S. Census Bureau ACS 5-Year (2020-2024).

Economy & Workforce

Economic Metric Estimate / Value Margin of Error
Median Household Income $68,854 ±$35,722
Per Capita Income $41,131 ±$9,018
Poverty Rate 24.8% ±12.6%
Population Below Poverty Level 271 ±144
Unemployment Rate 5.3% ±5.1%
Civilian Labor Force, Employed 379 ±94
Broadband Internet Rate 95% ±7.3%
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: 45,795 (2024)
ID: 209715
County Official County Government
Contact: CLERK OF THE BOARD
PO BOX 747, WATERVILLE WA 98858-0747

Education

Listing 5 local institutions (NCES 2024-2025) External reference via K12Guides
Institution Type Grades Location
Alternative School Nearby 09-12 Grand Coulee, WA
Regular School Nearby PK-06 Coulee Dam, WA
Regular School Nearby 07-12 COULEE DAM, WA
Regular School Nearby PK-08 NESPELEM, WA
Regular School Nearby 09-10 Nespelem, WA
Source: k12guides.com.

Community Facilities & Infrastructure

Displaying 2 civic institutions across 1 datasets queried CMS • IPEDS • IMLS
Facility Name Category Relationship Address / Location Contact
GRAND COULEE PUBLIC LIBRARY
Library 7.9 mi away 225 FEDERAL ST, GRAND COULEE, WA, 99133
(509) 663-0972
BRIDGEPORT PUBLIC LIBRARY
Library 24.9 mi away 1206 COLUMBIA ST, BRIDGEPORT, WA, 98813
(509) 686-7281
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 COULEE DAM 1 SW, WA US, located 7.4 miles from ZCTA5 99133. Local microclimates, topography, and elevation may cause municipal conditions to differ.
Month High (°F) Low (°F) Mean (°F) Precip (in) Snow (in)
January 32.7° 23.3° 28.0° 1.15" —
February 39.5° 25.3° 32.4° 0.88" —
March 50.7° 31.5° 41.1° 1.07" —
April 60.6° 37.7° 49.2° 0.97" —
May 70.8° 45.8° 58.3° 1.11" —
June 77.8° 52.0° 64.9° 1.15" —
July 87.6° 59.4° 73.5° 0.49" —
August 86.9° 58.3° 72.6° 0.33" —
September 76.8° 50.5° 63.7° 0.36" —
October 60.2° 40.1° 50.1° 0.94" —
November 43.0° 30.9° 37.0° 1.20" —
December 33.1° 23.9° 28.5° 1.42" —
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
Coulee Dam town Town 7.9 mi —
Grand Coulee city City 7.9 mi —
Electric City city City 8.0 mi —
Elmer City town Town 8.5 mi —
Nespelem Community CDP CDP 11.3 mi —
Nespelem town Town 13.2 mi —

Sources & Data Provenance

  1. Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 99133. • 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.