| Official Name: | Big Thicket Lake Estates, Texas |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Texas#USA |
| Pushpin Label: | Big Thicket Lake Estates |
| Mapsize: | 300px |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Polk, Liberty |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 6.54 |
| Area Land Km2: | 6.05 |
| Area Water Km2: | 0.48 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 514 |
| Population Density Km2: | 122.6 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 145 |
| Coordinates: | 30.4875°N -94.7678°W |
| Postal Code Type: | ZIP Codes |
| Postal Code: | 77351, 77369 |
| Blank Name: | FIPS code |
| Blank Info: | 48-08240 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2586910 |
Big Thicket Lake Estates is a census-designated place (CDP) in Polk and Liberty counties, Texas, United States. This was a new CDP for the 2010 census, with a population of 742, decreasing to 514 at the 2020 census.[2]
Big Thicket Lake Estates is located along the southern border of Polk County and the northern border of Liberty County at 30.4875°N -94.7678°W (30.487388, -94.767885). The CDP has a total area of 6.5km2, of which 6.1km2 are land and 0.5km2, or 7.39%, are water.[1] It is a residential community built around several artificial lakes, the largest of which is Bear Foot Lake, a reservoir built on Mill Creek, a tributary of Menard Creek and then the Trinity River.
Texas State Highway 146 forms the western edge of the community. The highway leads north to Livingston and south to Liberty.
| White (NH) | 442 | 85.99% | |
| Black or African American (NH) | 2 | 0.39% | |
| Native American or Alaska Native (NH) | 4 | 0.78% | |
| Some Other Race (NH) | 2 | 0.39% | |
| Mixed/Multi-Racial (NH) | 26 | 5.06% | |
| Hispanic or Latino | 38 | 7.39% | |
| Total | 514 |
Sections in Polk County are divided between the Big Sandy Independent School District and the Livingston Independent School District.[4] Parts in Liberty County are in the Hardin Independent School District.[5]