Census tracts · San Marcos, TX

Census tracts in San Marcos, Texas

15 census tracts lie mostly within San Marcos, and 5 more reach into it, by the 2020 census blocks they share. Median household income runs from $39,115 in Tract 103.07 to $97,629 in Tract 106.03, against $51,281 for San Marcos as a whole (ACS 2020-2024 5-year estimates).

Which census tracts of San Marcos earn the most and the least?

The five tracts with the highest and the lowest median household income among those mostly within San Marcos and with a reliable estimate.

Tract 106.03 $97,629
Tract 106.02 $68,073
Tract 106.01 $62,031
Tract 104.02 $59,208
Tract 103.08 $56,335
Tract 105 $44,802
Tract 101 $44,216
Tract 103.02 $43,462
Tract 102 $39,423
Tract 103.07 $39,115

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

Every census tract in San Marcos

Sort by any column; the share column is how much of each tract's land (by 2020 census blocks) lies inside San Marcos.

Census tracts in or partly in San Marcos, ACS 2020-2024 5-year estimates. Distance and direction from the Census Bureau's internal point of San Marcos (2024 Gazetteer), which is not always its downtown

Tract 10148209010100	0.7 mi northwest	Hays County	3,066±566	$44,216	$359,000	$1,232	100%
Tract 10248209010200	1.3 mi northwest	Hays County	6,697±423	$39,423	$316,900	$1,345	100%
Tract 103.0748209010307	1.3 mi northeast	Hays County	2,448±418	$39,115	$136,300	$1,180	100%
Tract 103.0848209010308	1.8 mi northeast	Hays County	1,640±507	$56,335	not published	$1,124	100%
Tract 106.0148209010601	1.6 mi northwest	Hays County	3,117±552	$62,031	$339,100	$1,610	100%
Tract 103.0248209010302	2.2 mi east	Hays County	4,941±1,055	$43,462	$167,200	$1,345	95%
Tract 107.0348209010703	1.9 mi north	Hays County	5,517±790	$45,646	$370,500	$1,151	92%
Tract 10548209010500	2.9 mi southwest	Hays County	4,975±881	$44,802	$261,900	$1,507	90%
Tract 104.0148209010401	1.0 mi southeast	Hays County	4,874±1,227	$54,375	$154,100	$1,491	89%
Tract 103.0548209010305	2.8 mi northeast	Hays County	5,593±665	$48,882	not published	$1,362	83%
Tract 103.0648209010306	4.5 mi northeast	Hays County	4,685±768	$54,310	$218,400	$1,476	81%
Tract 103.0948209010309	4.0 mi northeast	Hays County	5,296±963	$45,095	not published	$1,119	74%
Tract 106.0348209010603	6.0 mi west	Hays County	3,898±665	$97,629	$393,000	$1,207	61%
Tract 104.0248209010402	4.9 mi south	Hays County	9,259±1,186	$59,208	$276,100	$1,541	58%
Tract 106.0248209010602	4.7 mi west	Hays County	5,349±718	$68,073	$432,100	$1,354	57%
Tract 109.0548209010905	9.4 mi north	Hays County	12,257±1,065	$110,478	$392,200	$1,876	20%
Tract 107.0448209010704	6.2 mi northwest	Hays County	2,472±772	$45,094	$285,100	$1,060	15%
Tract 107.0248209010702	6.3 mi north	Hays County	3,253±503	$71,463	$444,100	$916	12%
Tract 9605.0148055960501	5.6 mi east	Caldwell County	4,703±465	$56,012	$266,400	$1,157	8%
Tract 2105.0548187210505	5.2 mi southeast	Guadalupe County	4,101±497	$90,096	$117,100	$1,265	6%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files · Census block assignment files

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections