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County · code 48275

Knox CountyTexas

Knox County is a county in Texas, formed in 1858 and fully organized in 1886, with its county seat in Benjamin.

  • Founded1858
  • County seatBenjamin
  • Named forHenry Knox
  • Land area851 sq mi + 4.9 sq mi water
  • Population3,353 2020 Census
  • Parcels mapped6,405 checked 16 October 2026
Open the free map Click any parcel in Knox County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

FoardHaskellBaylor Benjamin Census outline · seat marked

Where it is

Knox 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 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 CountyWashington CountyWebb CountyWharton CountyWheeler CountyWichita CountyWilbarger CountyWillacy CountyWilliamson CountyWilson CountyWinkler CountyWise CountyWood CountyYoakum CountyYoung CountyZapata CountyZavala CountyKnox County Knox
Counties of Texas · Knox highlighted

History

Founded in 1858

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

Knox County was created in 1858 from Young Territory but remained unorganized for decades, during which it was attached to various neighboring counties for judicial purposes. The county was fully organized in 1886 and detached from Baylor County, and is named after Henry Knox. Knox County lost territory in 1876 with the creation of King County and again in 1891 with the creation of Foard County.

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

  1. 1858
    Knox County created Knox created from Young Territory; Knox not fully organized. · Texas Laws 1857, 7th leg., ch. 75, sec. 18/p. 90
  2. 1860
    Changed Knox attached to Young "for all judicial purposes."
    Young
    · Texas Laws 1859, 8th leg., reg. sess., gen., ch. 87, sec. 5/p. 120
  3. c. 1865
    Changed Young disorganized, ending attachment of Knox to Young.
    Young
    · "Young County," New Handbook of Texas, 6:1131; "Kimmarle & Hirsh v. Houston & Texas Central Railway," in Texas Rpts., 76:690-691
  4. 1876
    Lost territory Knox lost to creation of King; Knox boundaries redefined to reflect creation of King.
    to King
    · Texas Laws 1876, 15th leg., ch. 144/pp. 238, 240
  5. 1891
    Lost territory Knox lost to creation of Foard.
    to Foard
    · Texas Laws 1891, 22d leg., reg. sess., ch. 15/p. 17
Show all 13 changes (8 more)
  1. 1858
    Knox County created Knox created from Young Territory; Knox not fully organized. · Texas Laws 1857, 7th leg., ch. 75, sec. 18/p. 90
  2. 1860
    Changed Knox attached to Young "for all judicial purposes."
    Young
    · Texas Laws 1859, 8th leg., reg. sess., gen., ch. 87, sec. 5/p. 120
  3. c. 1865
    Changed Young disorganized, ending attachment of Knox to Young.
    Young
    · "Young County," New Handbook of Texas, 6:1131; "Kimmarle & Hirsh v. Houston & Texas Central Railway," in Texas Rpts., 76:690-691
  4. 1866
    Changed Knox attached to Young "for judicial purposes."
    Young
    · Texas Laws 1866, 11th leg., ch. 35, sec. 17/p. 27
  5. 1866
    Changed Knox detached from Young, attached to Jack "for judicial and other purposes."
    YoungJack
    · Texas Laws 1866, 11th leg., ch. 96, sec. 1/p. 94
  6. 1870
    Changed Knox detached from Jack, attached to Montague "for judicial purposes."
    JackMontague
    · Texas Laws 1870, 12th leg., called sess., ch. 40, sec. 13/p. 53
  7. 1876
    Lost territory Knox lost to creation of King; Knox boundaries redefined to reflect creation of King.
    to King
    · Texas Laws 1876, 15th leg., ch. 144/pp. 238, 240
  8. 1879
    Changed Knox detached from Montague, attached to Clay "for judicial and other purposes."
    MontagueClay
    · Texas Laws 1879, 16th leg., reg. sess., ch. 136/p. 150
  9. 1881
    Changed Knox detached from Clay, attached to Baylor "for judicial purposes."
    ClayBaylor
    · Texas Laws 1881, 17th leg., reg. sess., ch. 18, sec. 2/p. 12
  10. c. 1886
    Changed Knox fully organized, detached from Baylor.
    Baylor
    · Knox County History Committee, 17
  11. 1887
    Changed King detached from Baylor, attached to Knox "for judicial purposes."
    KingBaylor
    · Texas Laws 1887, 20th leg., reg. sess., ch. 98, sec. 8/p. 81
  12. 1891
    Lost territory Knox lost to creation of Foard.
    to Foard
    · Texas Laws 1891, 22d leg., reg. sess., ch. 15/p. 17
  13. 1891
    Changed King fully organized, detached from Knox.
    King
    · Kennedy, 119

Land and parcels

What the maps cover in Knox

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

Knox by the Census

Population
3,353 2020 Census count
Housing units
1,801 2020 Census count
Land area
851 square miles
Water area
4.9 square miles
People per sq mi
4 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

Knox 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 Knox 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 Knox County

When was Knox County founded?
Knox County was founded in 1858, and named after Henry Knox.
What is the county seat of Knox County?
The county seat of Knox County is Benjamin.
Is there an online parcel map for Knox County?
Yes. A public source publishes a parcel map of 6,405 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Knox County's boundary or name changed?
Knox County was created in 1858. Since then the Atlas of Historical County Boundaries records 12 later changes, chiefly involving Young County, Baylor County and King County.
Is my lot in a flood zone?
We do not have flood maps for Knox 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