Census tracts · Castro Valley, CA

Census tracts in Castro Valley, California

12 census tracts lie mostly within Castro Valley, and 4 more reach into it, by the 2020 census blocks they share. Median household income runs from $103,750 in Tract 4310 to $214,477 in Tract 4301.01, against $142,779 for Castro Valley as a whole (ACS 2020-2024 5-year estimates).

Which census tracts of Castro Valley earn the most and the least?

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

Tract 4301.01 $214,477
Tract 4304 $193,958
Tract 4306 $193,606
Tract 4302 $181,136
Tract 4303 $175,772
Tract 4309 $120,000
Tract 4305 $114,408
Tract 4311 $106,473
Tract 4308 $106,016
Tract 4310 $103,750

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 Castro Valley

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

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

Tract 430206001430200	0.9 mi north	Alameda County	7,195±733	$181,136	$1,229,900	$3,218	100%
Tract 430306001430300	1.2 mi northwest	Alameda County	4,028±727	$175,772	$1,200,900	$3,500 or more	100%
Tract 430406001430400	2.3 mi northwest	Alameda County	2,160±231	$193,958	$1,165,100	$3,218	100%
Tract 430506001430500	2.5 mi west	Alameda County	6,125±1,016	$114,408	$908,200	$2,366	100%
Tract 430606001430600	1.9 mi west	Alameda County	6,105±1,012	$193,606	$1,094,800	$2,983	100%
Tract 430706001430700	1.1 mi west	Alameda County	4,132±405	$145,521	$1,098,400	$2,396	100%
Tract 430806001430800	0.6 mi south	Alameda County	5,887±915	$106,016	$1,002,200	$2,592	100%
Tract 430906001430900	1.3 mi southwest	Alameda County	5,539±843	$120,000	$910,400	$2,303	100%
Tract 431006001431000	1.4 mi southwest	Alameda County	3,191±392	$103,750	$814,500	$2,618	100%
Tract 431106001431100	1.4 mi south	Alameda County	3,368±458	$106,473	$821,200	$2,517	93%
Tract 4301.0106001430101	2.9 mi northeast	Alameda County	6,562±880	$214,477	$1,366,600	$2,851	91%
Tract 431206001431200	1.8 mi southwest	Alameda County	6,033±655	$122,872	$776,100	$2,595	76%
Tract 432806001432800	3.5 mi west	Alameda County	3,930±548	$134,211	$1,118,400	$3,189	45%
Tract 4351.0306001435103	5.9 mi southeast	Alameda County	7,020±941	$189,638	$1,506,100	$3,500 or more	39%
Tract 4301.0206001430102	4.1 mi north	Alameda County	2,425±253	$192,426	$1,263,100	$3,013	35%
Tract 435306001435300	1.9 mi south	Alameda County	5,101±624	$104,909	$841,700	$2,275	7%

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