Age Data for County: Alameda
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| Population by Age Group |
County: Alameda |
State: California |
| Persons |
% of Population | Persons |
% of Population |
| 0-4 |
82,961 |
5.07% |
2,077,354 |
5.30% |
| 5-9 |
87,895 |
5.38% |
2,181,469 |
5.57% |
| 10-14 |
93,941 |
5.75% |
2,421,275 |
6.18% |
| 15-17 |
57,441 |
3.51% |
1,535,768 |
3.92% |
| 18-20 |
67,450 |
4.13% |
1,681,239 |
4.29% |
| 21-24 |
78,924 |
4.83% |
2,109,414 |
5.38% |
| 25-34 |
234,502 |
14.34% |
5,533,827 |
14.13% |
| 35-44 |
259,752 |
15.89% |
5,437,084 |
13.88% |
| 45-54 |
219,775 |
13.44% |
4,864,367 |
12.42% |
| 55-64 |
195,290 |
11.95% |
4,776,532 |
12.19% |
| 65-74 |
150,853 |
9.23% |
3,834,304 |
9.79% |
| 75-84 |
77,971 |
4.77% |
1,995,084 |
5.09% |
| 85+ |
28,030 |
1.71% |
725,155 |
1.85% |
Population by Age
| Population by Age |
County: Alameda |
State: California |
| Persons |
% of Population | Persons |
% of Population |
| Under 18 |
322,238 |
19.71% |
8,215,866 |
20.97% |
| 18+ |
1,312,547 |
80.29% |
30,957,006 |
79.03% |
| 25+ |
1,166,173 |
71.33% |
27,166,353 |
69.35% |
| 65+ |
256,854 |
15.71% |
6,554,543 |
16.73% |
| 85+ |
28,030 |
1.71% |
725,155 |
1.85% |
| Median Age by Sex |
County: Alameda |
State: California |
| Years |
Years |
| All |
39.4 |
38.8 |
| Male |
38.5 |
37.6 |
| Female |
40.3 |
40.0 |
| Male Population by Age Group |
County: Alameda |
State: California |
| Persons |
% of Male Population | Persons |
% of Male Population |
| 0 - 4 |
42,309 |
5.28% |
1,060,768 |
5.48% |
| 5 - 9 |
44,918 |
5.61% |
1,113,015 |
5.75% |
| 10 - 14 |
48,054 |
6.00% |
1,238,303 |
6.40% |
| 15 - 17 |
29,444 |
3.68% |
786,712 |
4.07% |
| 18 - 20 |
34,005 |
4.25% |
858,889 |
4.44% |
| 21 - 24 |
40,085 |
5.01% |
1,089,771 |
5.63% |
| 25 - 34 |
116,858 |
14.59% |
2,831,281 |
14.63% |
| 35 - 44 |
127,365 |
15.91% |
2,723,398 |
14.07% |
| 45 - 54 |
108,692 |
13.57% |
2,387,124 |
12.34% |
| 55 - 64 |
94,872 |
11.85% |
2,323,779 |
12.01% |
| 65 - 74 |
70,227 |
8.77% |
1,795,630 |
9.28% |
| 75 - 84 |
33,714 |
4.21% |
872,877 |
4.51% |
| 85+ |
10,150 |
1.27% |
270,133 |
1.40% |
Male Population by Age
| Male Population by Age |
County: Alameda |
State: California |
| Persons |
% of Male Population | Persons |
% of Male Population |
| Under 18 |
164,725 |
20.57% |
4,198,798 |
21.70% |
| 18+ |
635,968 |
79.43% |
15,152,882 |
78.30% |
| 65+ |
114,091 |
14.25% |
2,938,640 |
15.19% |
| 85+ |
10,150 |
1.27% |
270,133 |
1.40% |
| Female Population by Age Group |
County: Alameda |
State: California |
| Persons |
% of Female Population | Persons |
% of Female Population |
| 0 - 4 |
40,652 |
4.87% |
1,016,586 |
5.13% |
| 5 - 9 |
42,977 |
5.15% |
1,068,454 |
5.39% |
| 10 - 14 |
45,887 |
5.50% |
1,182,972 |
5.97% |
| 15 - 17 |
27,997 |
3.36% |
749,056 |
3.78% |
| 18 - 20 |
33,445 |
4.01% |
822,350 |
4.15% |
| 21 - 24 |
38,839 |
4.66% |
1,019,643 |
5.14% |
| 25 - 34 |
117,644 |
14.10% |
2,702,546 |
13.63% |
| 35 - 44 |
132,387 |
15.87% |
2,713,686 |
13.69% |
| 45 - 54 |
111,083 |
13.32% |
2,477,243 |
12.50% |
| 55 - 64 |
100,418 |
12.04% |
2,452,753 |
12.37% |
| 65 - 74 |
80,626 |
9.67% |
2,038,674 |
10.29% |
| 75 - 84 |
44,257 |
5.31% |
1,122,207 |
5.66% |
| 85+ |
17,880 |
2.14% |
455,022 |
2.30% |
Female Population by Age
| Female Population by Age |
County: Alameda |
State: California |
| Persons |
% of Female Population | Persons |
% of Female Population |
| Under 18 |
157,513 |
18.88% |
4,017,068 |
20.27% |
| 18+ |
676,579 |
81.12% |
15,804,124 |
79.73% |
| 65+ |
142,763 |
17.12% |
3,615,903 |
18.24% |
| 85+ |
17,880 |
2.14% |
455,022 |
2.30% |
Demographics information provided by Claritas, updated April 2024, under these
terms of use.
