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County · code 48477

Washington CountyTexas

Washington County is a county in Texas with its seat in Brenham. It was originally established as a municipality by Mexico in 1835 and became a county in the Republic of Texas in 1836.

  • Founded1835
  • County seatBrenham
  • Named forGeorge Washington
  • Land area604 sq mi + 18 sq mi water
  • Population35,805 2020 Census
  • Parcels mapped22,847 checked 15 October 2026
Open the free map Click any parcel in Washington County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

AustinBurlesonBrazosWallerGrimesLeeFayette Brenham Census outline · seat marked

Where it is

Washington on the map of Texas

Texas has 254 counties and county equivalents, each with its own records office. Shapes with a page are links.

Anderson CountyAndrews CountyAngelina CountyAransas CountyArcher CountyArmstrong CountyAtascosa CountyAustin CountyBailey CountyBandera CountyBastrop CountyBaylor CountyBee CountyBell CountyBexar CountyBlanco CountyBorden CountyBosque CountyBowie CountyBrazoria CountyBrazos CountyBrewster CountyBriscoe CountyBrooks CountyBrown CountyBurleson CountyBurnet CountyCaldwell CountyCalhoun CountyCallahan CountyCameron CountyCamp CountyCarson CountyCass CountyCastro CountyChambers CountyCherokee CountyChildress CountyClay CountyCochran CountyCoke CountyColeman CountyCollin CountyCollingsworth CountyColorado CountyComal CountyComanche CountyConcho CountyCooke CountyCoryell CountyCottle CountyCrane CountyCrockett CountyCrosby CountyCulberson CountyDallam CountyDallas CountyDawson CountyDeaf Smith CountyDelta CountyDenton CountyDeWitt CountyDickens CountyDimmit CountyDonley CountyDuval CountyEastland CountyEctor CountyEdwards CountyEllis CountyEl Paso CountyErath CountyFalls CountyFannin CountyFayette CountyFisher CountyFloyd CountyFoard CountyFort Bend CountyFranklin CountyFreestone CountyFrio CountyGaines CountyGalveston CountyGarza CountyGillespie CountyGlasscock CountyGoliad CountyGonzales CountyGray CountyGrayson CountyGregg CountyGrimes CountyGuadalupe CountyHale CountyHall CountyHamilton CountyHansford CountyHardeman CountyHardin CountyHarris CountyHarrison CountyHartley CountyHaskell CountyHays CountyHemphill CountyHenderson CountyHidalgo CountyHill CountyHockley CountyHood CountyHopkins CountyHouston CountyHoward CountyHudspeth CountyHunt CountyHutchinson CountyIrion CountyJack CountyJackson CountyJasper CountyJeff Davis CountyJefferson CountyJim Hogg CountyJim Wells CountyJohnson CountyJones CountyKarnes CountyKaufman CountyKendall CountyKenedy CountyKent CountyKerr CountyKimble CountyKing CountyKinney CountyKleberg CountyKnox CountyLamar CountyLamb CountyLampasas CountyLa Salle CountyLavaca CountyLee CountyLeon CountyLiberty CountyLimestone CountyLipscomb CountyLive Oak CountyLlano CountyLoving CountyLubbock CountyLynn CountyMcCulloch CountyMcLennan CountyMcMullen CountyMadison CountyMarion CountyMartin CountyMason CountyMatagorda CountyMaverick CountyMedina CountyMenard CountyMidland CountyMilam CountyMills CountyMitchell CountyMontague CountyMontgomery CountyMoore CountyMorris CountyMotley CountyNacogdoches CountyNavarro CountyNewton CountyNolan CountyNueces CountyOchiltree CountyOldham CountyOrange CountyPalo Pinto CountyPanola CountyParker CountyParmer CountyPecos CountyPolk CountyPotter CountyPresidio CountyRains CountyRandall CountyReagan CountyReal CountyRed River CountyReeves CountyRefugio CountyRoberts CountyRobertson CountyRockwall CountyRunnels CountyRusk CountySabine CountySan Augustine CountySan Jacinto CountySan Patricio CountySan Saba CountySchleicher CountyScurry CountyShackelford CountyShelby CountySherman CountySmith CountySomervell CountyStarr CountyStephens CountySterling CountyStonewall CountySutton CountySwisher CountyTarrant CountyTaylor CountyTerrell CountyTerry CountyThrockmorton CountyTitus CountyTom Green CountyTravis CountyTrinity CountyTyler CountyUpshur CountyUpton CountyUvalde CountyVal Verde CountyVan Zandt CountyVictoria CountyWalker CountyWaller CountyWard CountyWebb CountyWharton CountyWheeler CountyWichita CountyWilbarger CountyWillacy CountyWilliamson CountyWilson CountyWinkler CountyWise CountyWood CountyYoakum CountyYoung CountyZapata CountyZavala CountyWashington County Washington
Counties of Texas · Washington highlighted

History

Formed in 1835 from Austin County and Liberty County

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

Washington County was formed in 1835 from Austin County and Liberty County, and named after George Washington. Brenham is the county seat.

Deeds and plats from before 1835 for land now in Washington County may have been recorded in Austin County and Liberty County.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

  1. 1835
    Washington County created Washington (original county) created from Austin and Liberty; established as a municipality by Mexico. Precise boundaries not described; general area of municipality mapped.
    from Austinfrom Liberty
    · "Documents Relating to the Organization…," 99; Partlow, inside front cover, 326
  2. 1836
    Became part of Texas Washington became a county in the Republic of Texas. · Connor, 170-171; Swindler, 9:254-255
  3. 1837
    Lost territory Washington boundaries defined; lost to creation of Montgomery and Non-County Area 1, lost to Harrisburg (now Harris), line between Washington and Austin was established.
    to Montgomeryto Harrisburgto Harristo Austin
    · Texas Repub. Laws 1837, 2d cong., 1st sess./pp. 33, 49
  4. 1840
    Lost territory Washington lost to Milam.
    to Milam
    · Texas Repub. Laws 1839, 4th cong./p. 223
  5. 1845
    Became part of Texas Washington became a county in the newly-established state of Texas. · Texas Repub. Laws 1845, 9th cong., spec. sess./pp. 4-6; U.S. Stat., vol. 9, res. 1 [1845]/p. 108; Van Zandt, 122
Show all 10 changes (5 more, mostly small adjustments)
  1. 1835
    Washington County created Washington (original county) created from Austin and Liberty; established as a municipality by Mexico. Precise boundaries not described; general area of municipality mapped.
    from Austinfrom Liberty
    · "Documents Relating to the Organization…," 99; Partlow, inside front cover, 326
  2. 1836
    Became part of Texas Washington became a county in the Republic of Texas. · Connor, 170-171; Swindler, 9:254-255
  3. 1837
    Lost territory Washington boundaries defined; lost to creation of Montgomery and Non-County Area 1, lost to Harrisburg (now Harris), line between Washington and Austin was established.
    to Montgomeryto Harrisburgto Harristo Austin
    · Texas Repub. Laws 1837, 2d cong., 1st sess./pp. 33, 49
  4. 1838
    Lost territory Washington lost small area to Austin.
    to Austin
    · Texas Repub. Laws 1838, 2d cong., 2d sess./p. 43
  5. 1840
    Lost territory Washington lost to Milam.
    to Milam
    · Texas Repub. Laws 1839, 4th cong./p. 223
  6. 1841
    Lost territory Washington lost to creation of Navasoto (now Brazos).
    to Navasototo Brazos
    · Texas Repub. Laws 1840, 5th cong./pp. 86-88
  7. 1842
    Changed Boundary between Washington and Austin adjusted.
    Austin
    · Texas Repub. Laws 1841, 6th cong., 1st sess./p. 76
  8. 1844
    Boundary clarified Part of the boundary between Washington and Austin clarified (no change).
    with Austinno change
    · Texas Repub. Laws 1843, 8th cong./p. 58
  9. 1845
    Became part of Texas Washington became a county in the newly-established state of Texas. · Texas Repub. Laws 1845, 9th cong., spec. sess./pp. 4-6; U.S. Stat., vol. 9, res. 1 [1845]/p. 108; Van Zandt, 122
  10. 1874
    Lost territory Washington lost to creation of Lee.
    to Lee.
    · Texas Laws 1874, 14th leg., reg. sess., ch. 75/pp. 94-97

Land and parcels

What the maps cover in Washington

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

Washington by the Census

Population
35,805 2020 Census count
Housing units
16,838 2020 Census count
Land area
604 square miles
Water area
18 square miles
People per sq mi
59 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

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Inside a city or town, permits usually come from that city rather than the county.

Records

Permits

County government

See your own lot on these maps

Open Washington 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 Washington County

When was Washington County founded?
Washington County was founded in 1835, formed from Austin County and Liberty County, and named after George Washington.
What is the county seat of Washington County?
The county seat of Washington County is Brenham.
Is there an online parcel map for Washington County?
Yes. Washington County publishes a parcel map of 22,847 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Washington County's boundary or name changed?
Washington County was created in 1835 from Austin County and Liberty County. Since then the Atlas of Historical County Boundaries records 8 later changes, chiefly involving Austin County, Brazos County and Harris County.
Who issues septic and well permits in Washington County?
The county's page on septic systems and wells: Contact Us.
Is my lot in a flood zone?
We do not have flood maps for Washington 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