County facts · Population growth · October 23, 2026
Fastest Growing Counties in Texas, 2020 to 2025
Texas's fastest growing counties by percent and by people added, April 2020 to July 2025 Census estimates, with each official parcel map.
Looking for the fastest growing counties in Texas? From the Census Bureau's April 1, 2020 estimates base to its July 1, 2025 estimate, Texas went from about 29,149,498 to 31,709,821 residents, a change of +2,560,323 (+8.8%). The fastest growing county by percentage was Kaufman County (+44.0%), while Harris County added the most people (+314,618, +6.7%).
Each table links the county's Platbookmapper page and its official parcel viewer, so you can go from the growth numbers straight to the property lines.
Texas growth at a glance
- County: 254
- Statewide, April 2020 to July 2025: +2,560,323 residents (+8.8%); July 2024 to July 2025 alone: +391,243 (+1.2%)
- Grew: 172 of 254 · Lost residents: 82
- Fastest growing by percent: Kaufman County (+44.0%); most people added: Harris County (+314,618)
- Counties with more deaths than births over the period: 143 of 254
The 10 fastest growing Texas counties by percent
| # | County | Apr 2020 | Jul 2025 | Change | % change | Parcel viewer |
|---|---|---|---|---|---|---|
| 1 | Kaufman County | 145,337 | 209,235 | +63,898 | +44.0% | appraisal district map |
| 2 | Liberty County | 91,661 | 121,364 | +29,703 | +32.4% | appraisal district map |
| 3 | Rockwall County | 107,884 | 140,738 | +32,854 | +30.5% | Prodigy CAD map |
| 4 | Comal County | 161,449 | 209,166 | +47,717 | +29.6% | appraisal district map |
| 5 | Hays County | 241,064 | 304,390 | +63,326 | +26.3% | appraisal district map |
| 6 | Montgomery County | 620,551 | 781,194 | +160,643 | +25.9% | county web map |
| 7 | Ellis County | 192,460 | 240,867 | +48,407 | +25.2% | appraisal district map |
| 8 | Parker County | 148,241 | 184,767 | +36,526 | +24.6% | appraisal district map |
| 9 | Chambers County | 46,539 | 57,594 | +11,055 | +23.8% | appraisal district map |
| 10 | Williamson County | 609,059 | 752,827 | +143,768 | +23.6% | appraisal district map |
These 10 added about 637,897 people combined. The median county changed by +2.3%.
The 10 counties that added the most people
| # | County | People added | % change | Jul 2025 | Parcel viewer |
|---|---|---|---|---|---|
| 1 | Harris County | +314,618 | +6.7% | 5,045,026 | appraisal district map |
| 2 | Collin County | +230,978 | +21.7% | 1,297,179 | county web map |
| 3 | Denton County | +162,816 | +18.0% | 1,069,346 | appraisal district map |
| 4 | Montgomery County | +160,643 | +25.9% | 781,194 | county web map |
| 5 | Fort Bend County | +151,194 | +18.3% | 975,191 | appraisal district map |
| 6 | Bexar County | +150,765 | +7.5% | 2,160,088 | county web map |
| 7 | Williamson County | +143,768 | +23.6% | 752,827 | appraisal district map |
| 8 | Tarrant County | +137,497 | +6.5% | 2,248,466 | county web map |
| 9 | Travis County | +99,513 | +7.7% | 1,389,670 | Prodigy CAD map |
| 10 | Kaufman County | +63,898 | +44.0% | 209,235 | appraisal district map |
The top 10 account for about 62% of all the gains in the counties that grew.
Where the new residents came from
The Census Bureau splits each change into natural change (births minus deaths), net domestic migration (moves from other parts of the US) and net international migration. Totals for April 2020 to July 2025 in the five fastest growing counties:
| County | Births minus deaths | Net domestic moves | Net international moves | Total change |
|---|---|---|---|---|
| Kaufman County | +6,923 | +55,235 | +1,655 | +63,898 |
| Liberty County | +2,799 | +25,277 | +1,645 | +29,703 |
| Rockwall County | +2,818 | +29,086 | +1,077 | +32,854 |
| Comal County | +1,105 | +46,344 | +609 | +47,717 |
| Hays County | +8,464 | +50,067 | +4,650 | +63,326 |
In all 5, moves from elsewhere in the US were the biggest source of growth. The three parts do not add up exactly to the total because the Census Bureau also carries a small residual.
The last year alone: July 2024 to July 2025
- Loving County: +10.6% (+5)
- Waller County: +5.7% (+3,761)
- Kaufman County: +5.7% (+11,225)
- Liberty County: +4.4% (+5,073)
- Caldwell County: +4.2% (+2,211)
2 of these 5 are also in the 2020–2025 top 10.
Counties losing residents
82 of Texas's 254 counties had fewer residents in July 2025 than in April 2020. The steepest declines:
- King County: −26.7% (−70, now about 192)
- Garza County: −22.4% (−1,305, now about 4,510)
- Reeves County: −17.7% (−2,605, now about 12,138)
- Loving County: −16.1% (−10, now about 52)
- Jeff Davis County: −14.4% (−288, now about 1,711)
What fast growth means on a parcel map
- New lots show up as plats first. When land is subdivided, the plat is recorded with the county and the parcel layer catches up on its own schedule, so a brand-new lot may not appear on the map for a while. Check the recorder's recent plats if a parcel looks missing.
- Parcel numbers change after splits. A tract that was one parcel last year can be several today. Search by owner name or address as well as by an old parcel number.
- City limits move. Growing cities annex land, which changes who handles zoning and permits even though the county still keeps the deed and the tax map.
- Percent is not the same as people. A small county can post a big percentage on a modest number of new residents, so read the people-added column too.
Related guides
- Largest counties in Texas
- Texas county GIS websites by viewer
- Texas plat maps
- Texas landowner maps for hunting
- Fastest growing counties in the US
- US counties losing population
More: All Texas counties on Platbookmapper
Sources
- U.S. Census Bureau, Population Estimates Program, county totals, Vintage 2025 (April 1, 2020 estimates base and July 1, 2020–2025 estimates, with components of change). Percent change is from the April 1, 2020 estimates base to the July 1, 2025 estimate.
- Platbookmapper county GIS directory (live data file behind our county pages, pulled October 23, 2026) for each official parcel viewer.