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ZIP Code 99357, Washington

ZIP Code 99357 profile, demographic data, and geographic information.

ZCTA5 99357 is a 5-digit ZIP Code area located in Grant County, Washington. As of official census estimates, it has a reported population of 3,843. The land area covers 217.23 sq mi. [1]

Demographics & Population

Demographic Metric Estimate / Count Margin of Error Survey Period / Source
Total Population 3,843 ±632 2020-2024 / Census ACS 5-Year 2024
Median Age 31.4 yrs ±2.6 2020-2024 / Census ACS 5-Year 2024
Total Households 996 ±167 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 1,125 ±180
Occupied Housing Units 996 ±167
Vacant Housing Units 129 ±81
Median Home Value $326,700 ±$165,582
Median Gross Rent $758 ±$71
Source: U.S. Census Bureau ACS 5-Year (2020-2024).

Economy & Workforce

Economic Metric Estimate / Value Margin of Error
Median Household Income $57,034 ±$9,798
Per Capita Income $24,418 ±$4,756
Poverty Rate 28.6% ±9.5%
Population Below Poverty Level 1,095 ±406
Unemployment Rate 16.8% ±8.4%
Civilian Labor Force, Employed 1,541 ±260
Broadband Internet Rate 92.5% ±4.6%
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 10 local institutions (NCES 2024-2025) External reference via K12Guides
Institution Type Grades Location
Special Education School Nearby PK Mattawa, WA
Regular School Nearby KG-05 QUINCY, WA
Regular School Nearby KG Mattawa, WA
Regular School Nearby PK Mattawa, WA
Regular School Nearby 04-05 Mattawa, WA
Regular School Nearby PK-03 Royal City, WA
Regular School Nearby 09-12 Royal City, WA
Regular School Nearby 04-06 Royal City, WA
Regular School Nearby 07-08 Royal City, WA
Regular School Nearby 01-03 Mattawa, WA
Source: k12guides.com.

Community Facilities & Infrastructure

Displaying 5 civic institutions across 1 datasets queried CMS • IPEDS • IMLS
Facility Name Category Relationship Address / Location Contact
ROYAL CITY PUBLIC LIBRARY
Library 1.9 mi away 356 CAMELIA ST NW, ROYAL CITY, WA, 99357
(509) 346-9281
MATTAWA PUBLIC LIBRARY
Library 15.8 mi away 101 MANSON LANE, MATTAWA, WA, 99349
(509) 932-5507
GEORGE PUBLIC LIBRARY
Library 15.8 mi away 403 S. WASHINGTON WAY, GEORGE, WA, 98824
(509) 785-7043
OTHELLO BRANCH LIBRARY
Library 23.5 mi away 101 E. MAIN STREET, OTHELLO, WA, 99344
(509) 488-9683
MOSES LAKE PUBLIC LIBRARY
Library 24.7 mi away 418 E 5TH AVE, MOSES LAKE, WA, 98837
(509) 765-3489
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 PRIEST RAPIDS DAM, WA US, located 20.5 miles from ZCTA5 99357. Local microclimates, topography, and elevation may cause municipal conditions to differ.
Month High (°F) Low (°F) Mean (°F) Precip (in) Snow (in)
January 40.6° 29.6° 35.1° 1.08" —
February 46.9° 32.1° 39.5° 0.62" —
March 56.9° 37.9° 47.4° 0.74" —
April 65.4° 44.8° 55.1° 0.55" —
May 75.2° 52.7° 64.0° 0.55" —
June 82.0° 59.6° 70.8° 0.54" —
July 91.6° 66.5° 79.0° 0.21" —
August 90.2° 65.9° 78.1° 0.08" —
September 80.4° 57.7° 69.0° 0.15" —
October 65.3° 46.4° 55.9° 0.65" —
November 49.9° 36.2° 43.0° 0.91" —
December 40.9° 29.9° 35.4° 1.40" —
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
Royal City city City 2.1 mi —
Beverly CDP CDP 13.3 mi —
Schwana CDP CDP 13.3 mi —
Marine View CDP CDP 15.5 mi —
Mattawa city City 15.7 mi —
Vantage CDP CDP 16.0 mi —

Sources & Data Provenance

  1. Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 99357. • 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.