21840 Zip Code Historical Age Data
ACS 2010-2014 data
Total population: 571
Median Age (
see rank)
| 21840 Zip Code | 40.80 years old |
| Maryland | 38.10 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| 21840 Zip Code | 40.50 years old |
| Maryland | 36.50 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| 21840 Zip Code | 44.70 years old |
| Maryland | 39.60 years old |
| U.S. | 38.80 years old |
| | 21840 Zip Code | % of the Total Population | Maryland | U.S. |
| Under 5 years | 14 | 2.45%, see rank | 6.24% | 6.36% |
| 5 to 9 years | 16 | 2.80%, see rank | 6.30% | 6.51% |
| 10 to 14 years | 43 | 7.53%, see rank | 6.41% | 6.59% |
| 15 to 19 years | 96 | 16.81%, see rank | 6.73% | 6.85% |
| 20 to 24 years | 25 | 4.38%, see rank | 6.84% | 7.13% |
| 25 to 34 years | 0 | 0.00%, see rank | 13.60% | 13.47% |
| 35 to 44 years | 116 | 20.32%, see rank | 13.23% | 12.96% |
| 45 to 54 years | 42 | 7.36%, see rank | 15.18% | 14.09% |
| 55 to 64 years | 127 | 22.24%, see rank | 12.50% | 12.29% |
| 65 to 74 years | 78 | 13.66%, see rank | 7.33% | 7.64% |
| 75 to 84 | 14 | 2.45%, see rank | 3.88% | 4.25% |
| 85 years and over | 0 | 0.00%, see rank | 1.77% | 1.85% |
US Census 2010 data
Total population: 375
Median Age (
see rank)
| 21840 Zip Code | 51.80 years old |
| Maryland | 38.00 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| 21840 Zip Code | 48.80 years old |
| Maryland | 36.40 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| 21840 Zip Code | 53.30 years old |
| Maryland | 39.30 years old |
| U.S. | 38.50 years old |
| | 21840 Zip Code | % of the Total Population | Maryland | U.S. |
| Under 5 years | 10 | 2.67%, see rank | 6.31% | 6.54% |
| 5 to 9 years | 15 | 4.00%, see rank | 6.35% | 6.59% |
| 10 to 14 years | 19 | 5.07%, see rank | 6.56% | 6.70% |
| 15 to 19 years | 22 | 5.87%, see rank | 7.04% | 7.14% |
| 20 to 24 years | 10 | 2.67%, see rank | 6.82% | 6.99% |
| 25 to 34 years | 28 | 7.47%, see rank | 13.20% | 13.30% |
| 35 to 44 years | 44 | 11.73%, see rank | 13.78% | 13.30% |
| 45 to 54 years | 60 | 16.00%, see rank | 15.63% | 14.58% |
| 55 to 64 years | 75 | 20.00%, see rank | 12.05% | 11.82% |
| 65 to 74 years | 47 | 12.53%, see rank | 6.69% | 7.03% |
| 75 to 84 | 41 | 10.93%, see rank | 3.87% | 4.23% |
| 85 years and over | 4 | 1.07%, see rank | 1.70% | 1.78% |
ACS 2008-2012 data
Total population: 458
Median Age (
see rank)
| 21840 Zip Code | 41.00 years old |
| Maryland | 37.90 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| 21840 Zip Code | 40.50 years old |
| Maryland | 36.30 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| 21840 Zip Code | 56.30 years old |
| Maryland | 39.30 years old |
| U.S. | 38.50 years old |
| | 21840 Zip Code | % of the Total Population | Maryland | U.S. |
| Under 5 years | 0 | 0.00%, see rank | 6.31% | 6.51% |
| 5 to 9 years | 15 | 3.28%, see rank | 6.30% | 6.57% |
| 10 to 14 years | 46 | 10.04%, see rank | 6.57% | 6.68% |
| 15 to 19 years | 51 | 11.14%, see rank | 7.01% | 7.09% |
| 20 to 24 years | 0 | 0.00%, see rank | 6.83% | 7.04% |
| 25 to 34 years | 0 | 0.00%, see rank | 13.25% | 13.32% |
| 35 to 44 years | 119 | 25.98%, see rank | 13.82% | 13.34% |
| 45 to 54 years | 21 | 4.59%, see rank | 15.46% | 14.44% |
| 55 to 64 years | 61 | 13.32%, see rank | 12.07% | 11.84% |
| 65 to 74 years | 108 | 23.58%, see rank | 6.78% | 7.12% |
| 75 to 84 | 37 | 8.08%, see rank | 3.89% | 4.25% |
| 85 years and over | 0 | 0.00%, see rank | 1.70% | 1.78% |
US Census 2000 data
Total population: 423
Median Age (
see rank)
| 21840 Zip Code | 51.90 years old |
| Maryland | 36.00 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| 21840 Zip Code | 52.00 years old |
| Maryland | 34.90 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| 21840 Zip Code | 51.90 years old |
| Maryland | 37.00 years old |
| U.S. | 36.50 years old |
| | 21840 Zip Code | % of the Total Population | Maryland | U.S. |
| Under 5 years | 10 | 2.36%, see rank | 6.67% | 6.81% |
| 5 to 9 years | 27 | 6.38%, see rank | 7.39% | 7.30% |
| 10 to 14 years | 15 | 3.55%, see rank | 7.40% | 7.29% |
| 15 to 19 years | 20 | 4.73%, see rank | 6.72% | 7.18% |
| 20 to 24 years | 11 | 2.60%, see rank | 5.93% | 6.74% |
| 25 to 34 years | 34 | 8.04%, see rank | 14.13% | 14.18% |
| 35 to 44 years | 54 | 12.77%, see rank | 17.30% | 16.04% |
| 45 to 54 years | 60 | 14.18%, see rank | 14.26% | 13.39% |
| 55 to 64 years | 66 | 15.60%, see rank | 8.88% | 8.63% |
| 65 to 74 years | 71 | 16.78%, see rank | 6.07% | 6.54% |
| 75 to 84 | 42 | 9.93%, see rank | 3.99% | 4.39% |
| 85 years and over | 13 | 3.07%, 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.
