Alameda County Historical Age Data
ACS 2010-2014 data
Total population: 1,559,308
Median Age (
see rank)
| Alameda County | 36.90 years old |
| California | 35.60 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| Alameda County | 36.00 years old |
| California | 34.50 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| Alameda County | 37.90 years old |
| California | 36.80 years old |
| U.S. | 38.80 years old |
| | Alameda County | % of the Total Population | California | U.S. |
| Under 5 years | 97,537 | 6.26%, see rank | 6.62% | 6.36% |
| 5 to 9 years | 95,681 | 6.14%, see rank | 6.65% | 6.51% |
| 10 to 14 years | 92,804 | 5.95%, see rank | 6.70% | 6.59% |
| 15 to 19 years | 96,814 | 6.21%, see rank | 7.12% | 6.85% |
| 20 to 24 years | 109,497 | 7.02%, see rank | 7.58% | 7.13% |
| 25 to 34 years | 240,451 | 15.42%, see rank | 14.48% | 13.47% |
| 35 to 44 years | 232,433 | 14.91%, see rank | 13.60% | 12.96% |
| 45 to 54 years | 224,438 | 14.39%, see rank | 13.79% | 14.09% |
| 55 to 64 years | 185,467 | 11.89%, see rank | 11.32% | 12.29% |
| 65 to 74 years | 103,202 | 6.62%, see rank | 6.71% | 7.64% |
| 75 to 84 | 54,135 | 3.47%, see rank | 3.72% | 4.25% |
| 85 years and over | 26,849 | 1.72%, see rank | 1.70% | 1.85% |
US Census 2010 data
Total population: 1,510,271
Median Age (
see rank)
| Alameda County | 36.60 years old |
| California | 35.20 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Alameda County | 35.60 years old |
| California | 34.00 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Alameda County | 37.50 years old |
| California | 36.30 years old |
| U.S. | 38.50 years old |
| | Alameda County | % of the Total Population | California | U.S. |
| Under 5 years | 97,652 | 6.47%, see rank | 6.79% | 6.54% |
| 5 to 9 years | 94,546 | 6.26%, see rank | 6.73% | 6.59% |
| 10 to 14 years | 91,070 | 6.03%, see rank | 6.95% | 6.70% |
| 15 to 19 years | 100,394 | 6.65%, see rank | 7.58% | 7.14% |
| 20 to 24 years | 107,049 | 7.09%, see rank | 7.42% | 6.99% |
| 25 to 34 years | 228,204 | 15.11%, see rank | 14.27% | 13.30% |
| 35 to 44 years | 227,491 | 15.06%, see rank | 13.91% | 13.30% |
| 45 to 54 years | 222,617 | 14.74%, see rank | 14.10% | 14.58% |
| 55 to 64 years | 173,502 | 11.49%, see rank | 10.84% | 11.82% |
| 65 to 74 years | 90,437 | 5.99%, see rank | 6.11% | 7.03% |
| 75 to 84 | 52,576 | 3.48%, see rank | 3.68% | 4.23% |
| 85 years and over | 24,733 | 1.64%, see rank | 1.61% | 1.78% |
ACS 2008-2012 data
Total population: 1,515,136
Median Age (
see rank)
| Alameda County | 36.60 years old |
| California | 35.20 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Alameda County | 35.60 years old |
| California | 34.10 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Alameda County | 37.60 years old |
| California | 36.40 years old |
| U.S. | 38.50 years old |
| | Alameda County | % of the Total Population | California | U.S. |
| Under 5 years | 98,185 | 6.48%, see rank | 6.82% | 6.51% |
| 5 to 9 years | 95,028 | 6.27%, see rank | 6.71% | 6.57% |
| 10 to 14 years | 90,384 | 5.97%, see rank | 6.91% | 6.68% |
| 15 to 19 years | 98,725 | 6.52%, see rank | 7.47% | 7.09% |
| 20 to 24 years | 107,624 | 7.10%, see rank | 7.49% | 7.04% |
| 25 to 34 years | 230,168 | 15.19%, see rank | 14.32% | 13.32% |
| 35 to 44 years | 228,990 | 15.11%, see rank | 13.93% | 13.34% |
| 45 to 54 years | 221,741 | 14.64%, see rank | 14.00% | 14.44% |
| 55 to 64 years | 174,154 | 11.49%, see rank | 10.85% | 11.84% |
| 65 to 74 years | 91,973 | 6.07%, see rank | 6.20% | 7.12% |
| 75 to 84 | 53,163 | 3.51%, see rank | 3.70% | 4.25% |
| 85 years and over | 25,001 | 1.65%, see rank | 1.62% | 1.78% |
ACS 2006-2010 data
Total population: 1,477,980
Median Age (
see rank)
| Alameda County | 36.20 years old |
| California | 34.90 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| Alameda County | 35.30 years old |
| California | 33.70 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| Alameda County | 37.20 years old |
| California | 36.00 years old |
| U.S. | 38.10 years old |
| | Alameda County | % of the Total Population | California | U.S. |
| Under 5 years | 97,935 | 6.63%, see rank | 6.95% | 6.62% |
| 5 to 9 years | 93,220 | 6.31%, see rank | 6.78% | 6.62% |
| 10 to 14 years | 89,699 | 6.07%, see rank | 7.12% | 6.79% |
| 15 to 19 years | 99,098 | 6.70%, see rank | 7.65% | 7.28% |
| 20 to 24 years | 103,068 | 6.97%, see rank | 7.37% | 6.98% |
| 25 to 34 years | 225,654 | 15.27%, see rank | 14.29% | 13.22% |
| 35 to 44 years | 229,646 | 15.54%, see rank | 14.43% | 13.89% |
| 45 to 54 years | 218,276 | 14.77%, see rank | 14.05% | 14.57% |
| 55 to 64 years | 161,691 | 10.94%, see rank | 10.28% | 11.28% |
| 65 to 74 years | 83,851 | 5.67%, see rank | 5.83% | 6.74% |
| 75 to 84 | 52,762 | 3.57%, see rank | 3.73% | 4.30% |
| 85 years and over | 23,080 | 1.56%, see rank | 1.52% | 1.70% |
ACS 2005-2009 data
Total population: 1,457,095
Median Age (
see rank)
| Alameda County | 36.10 years old |
| California | 34.60 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| Alameda County | 35.00 years old |
| California | 33.40 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| Alameda County | 37.20 years old |
| California | 35.70 years old |
| U.S. | 37.90 years old |
| | Alameda County | % of the Total Population | California | U.S. |
| Under 5 years | 103,651 | 7.11%, see rank | 7.44% | 6.92% |
| 5 to 9 years | 92,115 | 6.32%, see rank | 6.82% | 6.59% |
| 10 to 14 years | 89,376 | 6.13%, see rank | 7.26% | 6.83% |
| 15 to 19 years | 91,061 | 6.25%, see rank | 7.34% | 7.15% |
| 20 to 24 years | 91,284 | 6.26%, see rank | 7.20% | 7.02% |
| 25 to 34 years | 234,756 | 16.11%, see rank | 14.55% | 13.42% |
| 35 to 44 years | 231,508 | 15.89%, see rank | 14.71% | 14.18% |
| 45 to 54 years | 215,586 | 14.80%, see rank | 13.94% | 14.48% |
| 55 to 64 years | 152,127 | 10.44%, see rank | 9.81% | 10.81% |
| 65 to 74 years | 78,749 | 5.40%, see rank | 5.65% | 6.50% |
| 75 to 84 | 54,229 | 3.72%, see rank | 3.79% | 4.40% |
| 85 years and over | 22,653 | 1.55%, see rank | 1.50% | 1.71% |
US Census 2000 data
Total population: 1,443,741
Median Age (
see rank)
| Alameda County | 34.50 years old |
| California | 33.30 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| Alameda County | 33.50 years old |
| California | 32.20 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| Alameda County | 35.50 years old |
| California | 34.40 years old |
| U.S. | 36.50 years old |
| | Alameda County | % of the Total Population | California | U.S. |
| Under 5 years | 98,378 | 6.81%, see rank | 7.34% | 6.81% |
| 5 to 9 years | 104,648 | 7.25%, see rank | 8.05% | 7.30% |
| 10 to 14 years | 96,769 | 6.70%, see rank | 7.59% | 7.29% |
| 15 to 19 years | 92,448 | 6.40%, see rank | 7.24% | 7.18% |
| 20 to 24 years | 100,745 | 6.98%, see rank | 7.03% | 6.74% |
| 25 to 34 years | 241,073 | 16.70%, see rank | 15.44% | 14.18% |
| 35 to 44 years | 248,706 | 17.23%, see rank | 16.19% | 16.04% |
| 45 to 54 years | 200,518 | 13.89%, see rank | 12.79% | 13.39% |
| 55 to 64 years | 112,865 | 7.82%, see rank | 7.72% | 8.63% |
| 65 to 74 years | 75,699 | 5.24%, see rank | 5.57% | 6.54% |
| 75 to 84 | 53,069 | 3.68%, see rank | 3.79% | 4.39% |
| 85 years and over | 18,823 | 1.30%, see rank | 1.26% | 1.51% |
* ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.
