94121 Zip Code Historical Age Data
ACS 2010-2014 data
Total population: 42,043
Median Age (
see rank)
| 94121 Zip Code | 42.30 years old |
| California | 35.60 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| 94121 Zip Code | 41.40 years old |
| California | 34.50 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| 94121 Zip Code | 43.60 years old |
| California | 36.80 years old |
| U.S. | 38.80 years old |
| | 94121 Zip Code | % of the Total Population | California | U.S. |
| Under 5 years | 2,131 | 5.07%, see rank | 6.62% | 6.36% |
| 5 to 9 years | 1,543 | 3.67%, see rank | 6.65% | 6.51% |
| 10 to 14 years | 1,486 | 3.53%, see rank | 6.70% | 6.59% |
| 15 to 19 years | 1,332 | 3.17%, see rank | 7.12% | 6.85% |
| 20 to 24 years | 2,921 | 6.95%, see rank | 7.58% | 7.13% |
| 25 to 34 years | 6,756 | 16.07%, see rank | 14.48% | 13.47% |
| 35 to 44 years | 6,432 | 15.30%, see rank | 13.60% | 12.96% |
| 45 to 54 years | 6,058 | 14.41%, see rank | 13.79% | 14.09% |
| 55 to 64 years | 6,057 | 14.41%, see rank | 11.32% | 12.29% |
| 65 to 74 years | 3,380 | 8.04%, see rank | 6.71% | 7.64% |
| 75 to 84 | 2,647 | 6.30%, see rank | 3.72% | 4.25% |
| 85 years and over | 1,300 | 3.09%, see rank | 1.70% | 1.85% |
US Census 2010 data
Total population: 41,203
Median Age (
see rank)
| 94121 Zip Code | 42.40 years old |
| California | 35.20 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| 94121 Zip Code | 41.20 years old |
| California | 34.00 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| 94121 Zip Code | 43.60 years old |
| California | 36.30 years old |
| U.S. | 38.50 years old |
| | 94121 Zip Code | % of the Total Population | California | U.S. |
| Under 5 years | 1,769 | 4.29%, see rank | 6.79% | 6.54% |
| 5 to 9 years | 1,626 | 3.95%, see rank | 6.73% | 6.59% |
| 10 to 14 years | 1,566 | 3.80%, see rank | 6.95% | 6.70% |
| 15 to 19 years | 1,595 | 3.87%, see rank | 7.58% | 7.14% |
| 20 to 24 years | 2,776 | 6.74%, see rank | 7.42% | 6.99% |
| 25 to 34 years | 6,520 | 15.82%, see rank | 14.27% | 13.30% |
| 35 to 44 years | 6,206 | 15.06%, see rank | 13.91% | 13.30% |
| 45 to 54 years | 6,219 | 15.09%, see rank | 14.10% | 14.58% |
| 55 to 64 years | 5,903 | 14.33%, see rank | 10.84% | 11.82% |
| 65 to 74 years | 3,238 | 7.86%, see rank | 6.11% | 7.03% |
| 75 to 84 | 2,671 | 6.48%, see rank | 3.68% | 4.23% |
| 85 years and over | 1,114 | 2.70%, see rank | 1.61% | 1.78% |
ACS 2008-2012 data
Total population: 43,597
Median Age (
see rank)
| 94121 Zip Code | 41.60 years old |
| California | 35.20 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| 94121 Zip Code | 40.30 years old |
| California | 34.10 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| 94121 Zip Code | 42.70 years old |
| California | 36.40 years old |
| U.S. | 38.50 years old |
| | 94121 Zip Code | % of the Total Population | California | U.S. |
| Under 5 years | 2,005 | 4.60%, see rank | 6.82% | 6.51% |
| 5 to 9 years | 1,724 | 3.95%, see rank | 6.71% | 6.57% |
| 10 to 14 years | 1,665 | 3.82%, see rank | 6.91% | 6.68% |
| 15 to 19 years | 1,492 | 3.42%, see rank | 7.47% | 7.09% |
| 20 to 24 years | 2,851 | 6.54%, see rank | 7.49% | 7.04% |
| 25 to 34 years | 7,170 | 16.45%, see rank | 14.32% | 13.32% |
| 35 to 44 years | 7,169 | 16.44%, see rank | 13.93% | 13.34% |
| 45 to 54 years | 6,986 | 16.02%, see rank | 14.00% | 14.44% |
| 55 to 64 years | 5,679 | 13.03%, see rank | 10.85% | 11.84% |
| 65 to 74 years | 3,346 | 7.67%, see rank | 6.20% | 7.12% |
| 75 to 84 | 2,411 | 5.53%, see rank | 3.70% | 4.25% |
| 85 years and over | 1,099 | 2.52%, see rank | 1.62% | 1.78% |
US Census 2000 data
Total population: 42,473
Median Age (
see rank)
| 94121 Zip Code | 39.10 years old |
| California | 33.30 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| 94121 Zip Code | 37.70 years old |
| California | 32.20 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| 94121 Zip Code | 40.50 years old |
| California | 34.40 years old |
| U.S. | 36.50 years old |
| | 94121 Zip Code | % of the Total Population | California | U.S. |
| Under 5 years | 1,619 | 3.81%, see rank | 7.34% | 6.81% |
| 5 to 9 years | 1,640 | 3.86%, see rank | 8.05% | 7.30% |
| 10 to 14 years | 1,805 | 4.25%, see rank | 7.59% | 7.29% |
| 15 to 19 years | 1,854 | 4.37%, see rank | 7.24% | 7.18% |
| 20 to 24 years | 2,806 | 6.61%, see rank | 7.03% | 6.74% |
| 25 to 34 years | 8,534 | 20.09%, see rank | 15.44% | 14.18% |
| 35 to 44 years | 6,901 | 16.25%, see rank | 16.19% | 16.04% |
| 45 to 54 years | 6,493 | 15.29%, see rank | 12.79% | 13.39% |
| 55 to 64 years | 3,774 | 8.89%, see rank | 7.72% | 8.63% |
| 65 to 74 years | 3,604 | 8.49%, see rank | 5.57% | 6.54% |
| 75 to 84 | 2,543 | 5.99%, see rank | 3.79% | 4.39% |
| 85 years and over | 900 | 2.12%, 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.
