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County · code 48203

Harrison CountyTexas

Harrison County, in east Texas, is a county of about 900 square miles with its seat in Marshall. The county was created by the Republic of Texas on January 25, 1839, from Shelby and Miller counties and named after Jonas Harrison.

  • Founded1839
  • County seatMarshall
  • Named forJonas Harrison
  • Land area900 sq mi + 16 sq mi water
  • Population68,839 2020 Census
  • Parcels mapped51,336 checked 14 October 2026
Open the free map Click any parcel in Harrison County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

MarionPanolaGreggRuskUpshur Marshall Census outline · seat marked

Where it is

Harrison on the map of Texas

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

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Counties of Texas · Harrison highlighted

History

Formed in 1839 from Shelby County and Miller County

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

Harrison County was created in 1839 from Shelby and Miller counties but was not fully organized until 1842. The county experienced several boundary changes in its early years, including exchanges with Shelby and gains and losses with Panola, Smith, Rusk, Bowie, and Upshur counties. When Texas became a state in 1845, Harrison became one of its counties, and by 1846 had largely reached its current boundaries following the creation of neighboring counties.

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

  1. 1839
    Harrison County created Harrison created by the Republic of Texas from Shelby, overlapped part of Miller (Ark. Terr. extinct); Harrison not fully organized.
    from Shelbyfrom Miller
    · Texas Repub. Laws 1838, 3d cong./p. 143
  2. 1841
    Exchanged territory Harrison exchanged with Shelby, lost to creation of Panola (Judicial County). · Texas Repub. Laws 1840, 5th cong./ pp. 153-155
  3. 1844
    Lost territory Harrison lost to Bowie. · Texas Repub. Laws 1843, 8th cong./p. 12
  4. 1844
    Lost territory Harrison lost to Rusk. · Texas Repub. Laws 1844, 9th cong., 1st sess./p. 8
  5. 1845
    Became part of Texas Harrison 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 15 changes (10 more, mostly small adjustments)
  1. 1839
    Harrison County created Harrison created by the Republic of Texas from Shelby, overlapped part of Miller (Ark. Terr. extinct); Harrison not fully organized.
    from Shelbyfrom Miller
    · Texas Repub. Laws 1838, 3d cong./p. 143
  2. 1840
    Changed Survey of boundary between the Republic of Texas and the United States began. Harrison overlap with Miller (Ark Terr., extinct) ended when Texas claims to the area were upheld.
    Miller
    · U.S. Stat., vol. 5, ch. 75 [1844]/p. 674; Marshall, 235-236
  3. 1841
    Exchanged territory Harrison exchanged with Shelby, lost to creation of Panola (Judicial County). · Texas Repub. Laws 1840, 5th cong./ pp. 153-155
  4. 1842
    Lost territory Harrison lost small area to creation of Smith (Judicial County). · Texas Repub. Laws 1841, 6th cong., 1st sess./pp. 87-89
  5. 1842
    Changed Harrison fully organized. · Gournay, 39-40
  6. c. 1842
    Gained territory Harrison gained from Panola (Judicial County) and Smith (Judicial County) when Republic of Texas Supreme Court ruled judicial counties unconstitutional. · "Stockton v. Montgomery" in Dallam, 473-486
  7. 1843
    Lost territory Harrison lost small area to creation of Rusk. · Texas Repub. Laws 1842, 7th cong./pp. 39-41
  8. 1844
    Lost territory Harrison lost to Bowie. · Texas Repub. Laws 1843, 8th cong./p. 12
  9. 1844
    Lost territory Harrison lost to Rusk. · Texas Repub. Laws 1844, 9th cong., 1st sess./p. 8
  10. 1845
    Became part of Texas Harrison 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
  11. 1846
    Lost territory Harrison lost to creation of Panola. · Texas Laws 1846, 1st leg./p. 31
  12. 1846
    Lost territory Harrison lost to creation of Upshur. · Texas Laws 1846, 1st leg./p. 139
  13. 1858
    Lost territory Harrison lost small area to Upshur. · Texas Laws 1857, 7th leg., ch. 90/p. 105
  14. 1863
    Lost territory Harrison lost small area to Marion. · Texas Laws 1863, 10th leg., reg. sess., spec., ch. 9/p. 5
  15. 1874
    Lost territory Harrison lost to Marion. · Texas Laws 1874, 14th leg., reg. sess., ch. 127/p. 178

Land and parcels

What the maps cover in Harrison

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

Harrison by the Census

Population
68,839 2020 Census count
Housing units
29,223 2020 Census count
Land area
900 square miles
Water area
16 square miles
People per sq mi
76 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.

Permits

County government

See your own lot on these maps

Open Harrison 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.

Questions

Common questions about Harrison County

When was Harrison County founded?
Harrison County was founded in 1839, formed from Shelby County and Miller County, and named after Jonas Harrison.
What is the county seat of Harrison County?
The county seat of Harrison County is Marshall.
Is there an online parcel map for Harrison County?
Yes. Harrison County publishes a parcel map of 51,336 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Harrison County's boundary or name changed?
Harrison County was created in 1839 from Shelby County and Miller County. Since then the Atlas of Historical County Boundaries records 14 later changes, chiefly involving Panola County, Marion County and Rusk County.
Who issues septic and well permits in Harrison County?
The county's page on septic systems and wells: Health department: septic and well.
Is my lot in a flood zone?
We do not have flood maps for Harrison 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