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What county is Atascocita, TX in?

Updated November 1, 2026 · Data: U.S. Census Bureau

Atascocita, Texas is in Harris County.

Atascocita at a glance

Population93,9266th largest place in Harris County

Land area23.9 sq mi3,933 people per sq mi

Share of Harris County2%of the county's residents live here

County seatHouston18 mi from Atascocita

Time zoneCentralAmerica/Chicago

Nearest county line5.6 mito Montgomery County

How close is Atascocita to a county line?

The center of Atascocita (its Census internal point) is about 5.6 mi from the Montgomery County line. Homes near the edge of town can be much closer; if you live near a line, check your address and the lookup will tell you how far you are from it.

What ZIP codes are in Atascocita?

1 ZIP codes use the name Atascocita or are centered in it. Shares are of each ZIP's land; a ZIP named after a town can reach beyond its city limits.

ZIP	Post office name	County (land share)
77346	Humble	Harris County

About Harris County

County seat: Houston. FIPS code 48201. Population 4,758,579. All Harris County facts.

Towns near Atascocita

Humble: 4.2 mi away, Harris County
Sheldon: 9.0 mi away, Harris County
Crosby: 9.3 mi away, Harris County
Barrett: 12 mi away, Harris County
Aldine: 12 mi away, Harris County
Spring: 13 mi away, Harris County

Atascocita has about 93,926 people. It is a census-designated place (a named community with no city government).

Sources: ACS 2019-2023 5-year (residents by county, table B01003); Census TIGER/Line 2024 and Gazetteer 2024 (land, location); Census 2020 ZCTA file and GeoNames (ZIP codes). Data as of November 1, 2026. Not affiliated with any government agency.

FAQ

Frequently asked questions

What county is Atascocita, TX in?

Atascocita, Texas is in Harris County. The county seat of Harris County is Houston.

What ZIP codes are in Atascocita, TX?

77346.

Is Atascocita the county seat of Harris County?

No. The county seat is Houston, about 18 mi away.

What time zone is Atascocita, TX in?

Central time (America/Chicago).

How do I know which county my Atascocita address is in?

Use the address lookup at your home, or check your appraisal district record.

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© 2026 CountyFinder Privacy Terms Disclaimer Accessibility Data: U.S. Census Bureau 2024

CountyFinder is an independent website. It is not affiliated with the U.S. Census Bureau, USPS or any county, state or federal agency. County boundaries are from Census TIGER/Line, published for statistical purposes only: they are not a determination of jurisdictional authority or legal land descriptions. For legal or tax purposes, confirm your county with the county.