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County · code 53025

Grant CountyWashington

Grant County is a county in Washington, with its seat in Ephrata. The county was formed on February 24, 1909.

  • Founded1909
  • County seatEphrata
  • Named forUlysses S. Grant
  • Land area2,680 sq mi + 112 sq mi water
  • Population99,123 2020 Census
  • Parcels mapped57,161 checked 16 October 2026
Open the free map Click any parcel in Grant County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

DouglasFranklinAdamsBentonLincolnKittitasOkanoganYakima Ephrata Census outline · seat marked

Where it is

Grant on the map of Washington

Washington has 39 counties and county equivalents, each with its own records office. Shapes with a page are links.

Adams CountyAsotin CountyBenton CountyChelan CountyClallam CountyClark CountyColumbia CountyCowlitz CountyDouglas CountyFerry CountyFranklin CountyGarfield CountyGrays Harbor CountyIsland CountyJefferson CountyKing CountyKitsap CountyKittitas CountyKlickitat CountyLewis CountyLincoln CountyMason CountyOkanogan CountyPacific CountyPend Oreille CountyPierce CountySan Juan CountySkagit CountySkamania CountySnohomish CountySpokane CountyStevens CountyThurston CountyWahkiakum CountyWalla Walla CountyWhatcom CountyWhitman CountyYakima CountyGrant County Grant
Counties of Washington · Grant highlighted

History

Formed in 1909 from Douglas County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Grant County was created from Douglas County and named after Ulysses S. Grant.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

  1. 1909
    Grant County created Grant created from Douglas.
    from Douglas
    · Wash. Laws 1909, 11th leg. sess., ch. 17/pp. 19-25

Land and parcels

What the maps cover in Grant

Who publishes each layer, how good it is, and when we last checked.

Official
from the office that keeps the record
Good enough
a reliable statewide or national copy
Fallback
a guide only; check the official record
Missing
nothing public found yet

People and land

Grant by the Census

Population
99,123 2020 Census count
Housing units
38,635 2020 Census count
Land area
2,680 square miles
Water area
112 square miles
People per sq mi
37 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Grant County's official site

We have found the county's site but not its offices yet; start there.

County government

See your own lot on these maps

Open Grant County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

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Questions

Common questions about Grant County

When was Grant County founded?
Grant County was founded in 1909, formed from Douglas County, and named after Ulysses S. Grant.
What is the county seat of Grant County?
The county seat of Grant County is Ephrata.
Is there an online parcel map for Grant County?
Yes. Grant County publishes a parcel map of 57,161 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Grant County's boundary or name changed?
Grant County was created in 1909 from Douglas County. The Atlas of Historical County Boundaries records no boundary change since.
Is my lot in a flood zone?
We do not have flood maps for Grant County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door