Elections Code section 21410

Congressional District 10 consists of the following:
Partial Counties in Congressional District 10
ALAMEDA
Whole Tracts in Alameda County
4301.01, 4301.02, 4302.00, 4303.00, 4304.00, 4305.00, 4306.00, 4307.00, 4308.00, 4337.00, 4338.01, 4339.00, 4340.00
Partial Tracts in Alameda County
4309.00--the following census blocks:
1000, 1001, 1002, 1003, 1004, 1007, 1008, 2000, 2001, 2002, 2003, 2004, 2005, 3000, 3001, 3002
4310.00--the following census blocks:
1000, 1002, 1003, 1004, 2003, 2004, 2006, 2007, 2008, 2013, 2014, 2015, 2016, 2017, 2018, 2019
4328.00--the following census blocks:
1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011, 2013, 2014, 2015, 3000, 3001, 3002, 3003, 3004, 3005, 3006, 3007, 3008, 3010, 3011, 3012, 3013, 3014, 3015, 3016, 3017, 3018, 3019, 3020, 3021, 3022, 3023, 3024
4331.02--the following census blocks:
1019
4332.00--the following census blocks:
3012, 3013, 3014, 3015
4338.02--the following census blocks:
1000, 1001, 1002, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 1013, 1014, 1015, 1016, 1017, 1018, 1019, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
4505.02--the following census blocks:
1008, 2009
CONTRA COSTA
Whole Tracts in Contra Costa County
3020.12, 3020.14, 3031.04, 3031.05, 3031.06, 3031.07, 3032.02, 3032.04, 3032.08, 3032.09, 3032.10, 3032.11, 3040.01, 3040.02, 3040.03, 3040.04, 3040.06, 3040.07, 3141.03, 3141.05, 3142.00, 3150.00, 3160.00, 3170.00, 3180.00, 3190.01, 3190.02, 3200.01, 3200.03, 3200.04, 3211.01, 3211.02, 3211.03, 3212.00, 3220.00, 3230.00, 3240.02, 3240.03, 3240.04, 3250.00, 3260.00, 3270.01, 3270.02, 3280.00, 3290.00, 3300.00, 3310.00, 3320.00, 3331.01, 3331.02, 3332.00, 3340.01, 3340.06, 3340.07, 3340.08, 3342.00, 3350.00, 3361.01, 3361.03, 3361.04, 3362.01, 3362.02, 3371.00, 3372.01, 3372.02, 3373.00, 3381.01, 3381.02, 3382.01, 3382.03, 3382.04, 3383.01, 3383.02, 3390.01, 3390.03, 3390.04, 3400.01, 3400.03, 3400.04, 3410.00, 3430.01, 3430.02, 3430.03, 3451.01, 3451.02, 3451.03, 3451.05, 3451.11, 3451.12, 3451.13, 3451.14, 3451.15, 3451.16, 3451.17, 3451.18, 3452.03, 3452.04, 3452.05, 3452.06, 3461.01, 3461.02, 3462.03, 3462.04, 3462.05, 3462.06, 3470.00, 3480.00, 3490.00, 3500.00, 3511.01, 3511.03, 3511.04, 3511.05, 3512.00, 3521.01, 3521.02, 3522.01, 3522.02, 3530.01, 3530.02, 3540.02, 3551.12, 3551.13, 3551.15, 3551.21, 3551.22, 3551.23, 3551.24, 3551.25, 3551.26, 3553.02, 3553.06, 3553.07, 3553.08, 3553.09, 3553.10
Partial Tracts in Contra Costa County
3020.05--the following census blocks:
3004, 3006, 3007, 3008, 3009, 3010, 3011
3020.07--the following census blocks:
1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 2030, 2034, 3000, 3001, 3002, 3003, 3004, 3005, 3006, 3007, 3008, 3009, 3010, 3011, 3012, 3013, 3014
3020.11--the following census blocks:
1025, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
3020.13--the following census blocks:
1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 1013, 1014, 1015, 1016, 1017, 1018, 1019, 1020, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
3032.06--the following census blocks:
1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 1013, 2000, 2001, 2002, 2003, 2004, 2005, 2009, 2010, 2011, 2012, 2013, 2014, 2015
3032.07--the following census blocks:
2000, 2001, 2002, 2010, 2018, 2019
3060.02--the following census blocks:
2039, 2040, 2042, 2045
3131.06--the following census blocks:
2013, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2028
3132.03--the following census blocks:
1006, 1007, 1010, 2011
3132.04--the following census blocks:
2001, 2006, 2009, 2011, 2012, 2013, 2014
3132.05--the following census blocks:
1001, 1002, 1003, 1004
3141.02--the following census blocks:
1017, 2005, 2006
3141.06--the following census blocks:
1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
3540.01--the following census blocks:
1000, 1001, 1002, 1003, 1004, 1009, 1010, 1011, 1012, 1013, 1014, 1015, 1016, 1017, 1019, 1020, 1021, 1022, 1023, 1024, 1025, 1026, 1027, 1028, 1029, 1030, 1031, 1032
3551.07--the following census blocks:
1008, 1020, 1021, 1022, 1023, 1024, 1025, 1026, 1027, 1028, 1029, 1030, 1031, 1032, 1033, 1034, 1035, 1036, 1037, 1038, 1039, 1040, 3014, 3015, 3016, 3017, 3018, 3019, 3020, 3021, 3022, 3023, 3024, 3025, 3026, 3027, 3028, 3029, 3030, 3031
3551.19--the following census blocks:
1012, 1013, 1019, 1021, 1022, 1023
3552.01--the following census blocks:
1000, 1029, 3012, 3013
3552.02--the following census blocks:
1000, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 1013, 1014, 1015, 2020, 2021, 2023, 2024, 2025, 2026, 2027, 2028, 2029, 2030, 2031, 2032, 2033, 2034, 2035, 2036
3560.01--the following census blocks:
3000, 3001, 3020, 3021, 3022, 3023, 3024, 3025
3560.02--the following census blocks:
1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 1013, 1014, 1017, 1026, 1029, 1030, 1031, 1032, 1033, 1037, 1038, 1039, 1040, 1041, 1042, 1043, 1044, 1045, 1046, 1047, 1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055, 1056, 1057, 1058, 1059, 1060, 1061, 1062, 1063, 1064, 1065, 1066, 1067, 1068, 1069, 1070, 1071, 1072, 1073, 1074, 1075, 1076, 1077, 1078, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086, 1087, 1088, 1089, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1102, 1103, 1104, 1105, 1121, 1122, 1124, 1125, 1126, 1127, 1128, 1129, 1130, 1131, 1132, 1133, 1139, 1140, 1141, 1164, 1165, 1166, 1167, 1168, 1170, 1171, 1172, 1173, 1174
3570.00--the following census blocks:
1027, 1030, 1031, 1032, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 3000, 3001, 3002, 3003, 3004, 3005, 3006, 3007, 3008, 3009, 3010, 3011, 3012, 3013, 3014, 3015, 3016, 3017, 3018, 3019, 3020, 3021

Source: Section 21410, https://leginfo.­legislature.­ca.­gov/faces/codes_displaySection.­xhtml?lawCode=ELEC§ionNum=21410.­ (updated Aug. 21, 2025; accessed Sep. 15, 2025).

Green check means up to date. Up to date

Verified:
Sep. 15, 2025

§ 21410's source at ca​.gov