County · code 48113
Dallas CountyTexas
Dallas County is a county in Texas that was created in 1846 and has its county seat in Dallas.
- Founded1846
- County seatDallas
- Named forGeorge M. Dallas
- Land area873 sq mi + 35 sq mi water
- Population2,613,539 2020 Census
- Parcels mapped697,171 checked 14 October 2026
Where it is
Dallas on the map of Texas
Texas has 254 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1846 from Nacogdoches County and Robertson County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Dallas County was created on March 30, 1846, from Nacogdoches and Robertson counties, and was named after George M. Dallas. The county was not fully organized until July 13, 1846.
- 1846Dallas County created Dallas created from Nacogdoches and Robertson; Dallas not fully organized. · Texas Laws 1846, 1st leg./p. 26
- 1846Changed Dallas fully organized. · Memorial and Biographical History of Dallas County, 185
Land and parcels
What the maps cover in Dallas
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 697,171 parcels. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 14 October 2026 -
Address points Official
One point per address, 1,028,464 in all from Texas Geographic Information Office (TxGIO, formerly TNRIS), a division of the Texas Water Development Board; StratMap program.
checked 14 October 2026 -
Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- 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
Dallas by the Census
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
Zoning and code
County government
- County government
The official website of Dallas County.
See your own lot on these maps
Open Dallas 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 Dallas County
- When was Dallas County founded?
- Dallas County was founded in 1846, formed from Nacogdoches County and Robertson County, and named after George M. Dallas.
- What is the county seat of Dallas County?
- The county seat of Dallas County is Dallas.
- Is there an online parcel map for Dallas County?
- Yes. A public source publishes a parcel map of 697,171 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Dallas County's boundary or name changed?
- Dallas County was created in 1846 from Nacogdoches County and Robertson County. Since then the Atlas of Historical County Boundaries records 1 later change.
- Who issues building permits in Dallas County?
- The county's page on building permits: Permit Reports. Inside a city or town, ask that city first.
- Is my lot in a flood zone?
- We do not have flood maps for Dallas County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby