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Population Demographics for San Mateo County, California in 2020, 2019



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Population Demographics by Race

RacePopulation% of Total
Total Population718,451100
White383,53553
Hispanic or Latino182,50225
Asian178,11824
Some Other Race84,52911
Two or More Races38,2105
Black or African American20,4362
Native Hawaiian Pacific Islander10,3171
American Indian3,306Below 1%
Three or more races3,146Below 1%
Native Hawaiian525Below 1%

Population Demographics by Race and gender.

MaleFemaleTotal
Total Population353,168365,283718,451
White190,047193,488383,535
Hispanic or Latino92,49990,003182,502
Asian83,29494,824178,118
Some Other Race43,69740,83284,529
Two or More Races19,04019,17038,210
Black or African American10,36510,07120,436
Native Hawaiian Pacific Islander4,9815,33610,317
American Indian1,7441,5623,306
Three or more races1,5211,6253,146
Native Hawaiian254271525

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Demographic population totals

Total population in San Mateo County

 
Total Population:718,451
Male Population:353,168
Female Population:365,283

Demographic median age by sex

Median age in San Mateo County

 
Both sexes39
Male37
Female40

Demographic sex by age for the population in households

Population in households in San Mateo County

 
Total Population:709,598
Male Population:348,405
Under 5 years:23,591
5 to 9 years:22,775
10 to 14 years:21,695
15 to 17 years:13,259
18 and 19 years:7,662
20 years:3,876
21 years:3,842
22 to 24 years:13,106
25 to 29 years:24,409
30 to 34 years:25,449
35 to 39 years:26,542
40 to 44 years:26,615
45 to 49 years:27,359
50 to 54 years:26,168
55 to 59 years:22,885
60 and 61 years:8,460
62 to 64 years:10,894
65 and 66 years:5,616
67 to 69 years:7,265
70 to 74 years:9,491
75 to 79 years:7,160
80 to 84 years:5,437
85 years and over:4,849
Female Population:361,193
Under 5 years:22,630
5 to 9 years:21,863
10 to 14 years:20,654
15 to 17 years:12,726
18 and 19 years:6,876
20 years:3,280
21 years:3,255
22 to 24 years:11,962
25 to 29 years:23,455
30 to 34 years:25,152
35 to 39 years:26,410
40 to 44 years:27,676
45 to 49 years:28,519
50 to 54 years:27,459
55 to 59 years:24,488
60 and 61 years:9,268
62 to 64 years:12,221
65 and 66 years:6,780
67 to 69 years:8,529
70 to 74 years:11,693
75 to 79 years:9,318
80 to 84 years:8,049
85 years and over:8,930

Demographic average population of home by age

Average household size in San Mateo County

 
Total:2
Under 18 years:0
18 years and over:2

Demographic household type

Number of occupied homes in San Mateo County

 
Total:257,837
Family led homes:175,607
Husband-wife family:135,210
Other family:40,397
Population of male led with no wife present:12,478
Population female led with no husband present:27,919
Population of Nonfamily homes:82,230
Population living alone:63,219
Population not living alone:19,011

Demographic population of homes with people under 18 years old by type

Total occupied homes in San Mateo County with people under 18 years old:

 
Total:257,837
Population of homes with one or more people under 18 years:87,986
Population of family homes:87,320
Husband-wife family:65,991
Under 6 years only:18,340
Under 6 years and 6 to 17 years:14,470
6 to 17 years only:33,181
Other family:21,329
Male householder, no wife present:6,294
Under 6 years only:1,550
Under 6 years and 6 to 17 years:1,127
6 to 17 years only:3,617
Female led with no husband present:15,035
Under 6 years only:2,765
Under 6 years and 6 to 17 years:2,600
6 to 17 years only:9,670
Nonfamily households:666
Male led households:442
Under 6 years only:100
Under 6 years and 6 to 17 years:48
6 to 17 years only:294
Female led householder:224
Under 6 years only:61
Under 6 years and 6 to 17 years:21
6 to 17 years only:142
Households with no people under 18 years:169,851
Family households:88,287
Husband-wife family:69,219
Other family:19,068
Male led with no wife present:6,184
Female led with no husband present:12,884
Nonfamily households:81,564
Male led householder:36,458
Female led householder:45,106

Demographic type of home by age of owner-renter

Total number led homes in San Mateo County, by type

 
Total Home Population:257,837
Population of Family homes:175,607
Population of 15 to 24 year olds:2,526
Population of 25 to 34 year olds:22,416
Population of 35 to 44 year olds:40,679
Population of 45 to 54 year olds:44,116
Population of 55 to 59 year olds:18,387
Population of 60 to 64 year olds:15,393
Population of 65 to 74 year olds:18,051
Population of 75 to 84 year olds:10,284
Population of 85 year olds and over:3,755
Population of Nonfamily Homes:82,230
Population of 15 to 24 year olds:3,128
Population of 25 to 34 year olds:12,844
Population of 35 to 44 year olds:10,935
Population of 45 to 54 year olds:14,202
Population of 55 to 59 year olds:7,886
Population of 60 to 64 year olds:7,755
Population of 65 to 74 year olds:10,505
Population of 75 to 84 year olds:8,685
Population of 85 year olds and over:6,290

Demographic population of homes with people 60 year olds and over

households in San Mateo County containing people over 60

 
Total Population:257,837
Population of homes with one or more people 60 years and over:94,900
1-person household:29,506
2-or-more-person household:65,394
Family households:60,851
Nonfamily households:4,543
Population of homes with no people 60 years and over:162,937
1-person household:33,713
2-or-more-person household:129,224
Family homes:114,756
Nonfamily homes:14,468

Demographic population of multigenerational homes

homes in San Mateo County with multiple generations.

 
Total Population:257,837
Home has three or more generations:13,752
Home does not have three or more generations:244,085

Demographic presence of unmarried partner of home owner-renter

Unmarried population in San Mateo County under 18 years old in homes

 
Total Population:159,119
Unmarried partner of home lead present:9,295
In family homes:9,014
Population of male led and male partner homes:327
Population of male led and female partner households:4,204
Population of female led and female partner households:685
Population of female led and male partner households:3,798
In nonfamily homes:281
Population of male led and male partner homes:5
Population of male led and female partner homes:220
Population of female led and female partner homes:13
Population of female led and male partner homes:43
No unmarried partner of home lead present:149,824
In family homes:149,160
Population of husband-wife family homes:122,299
Population of male lead with no wife present, family homes:5,963
Population of female lead with no husband present, family homes:20,898
In nonfamily homes:664

Demographic population in families by age

Population in families living in San Mateo County

 
Total Population:575,554
Population Under 18 years:155,905
Population 18 years and over:419,649

Demographic tenure of people in homes

How long in San Mateo County have lived in one place.

 
Total:257,837
Population of Owner occupied homes:153,110
Family home:115,163
Nonfamily homess:37,947
Male led home:14,639
Living alone:10,947
Not living alone:3,692
Female led home:23,308
Living alone:19,631
Not living alone:3,677
Population of Renter occupied homes:104,727
Family run homes:60,444
Husband-wife family:39,252
Other family:21,192
Male led with no wife present:6,787
Female led with no husband present:14,405
Nonfamily Homes:44,283
Male led homes:22,261
Male living alone:15,536
Male not living alone:6,725
Female led homes:22,022
Females living alone:17,105
Females not living alone:4,917