Baltimore County Historical Age Data
ACS 2010-2014 data
Total population: 817,720
Median Age (
see rank)
| Baltimore County | 39.10 years old |
| Maryland | 38.10 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| Baltimore County | 37.40 years old |
| Maryland | 36.50 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| Baltimore County | 40.70 years old |
| Maryland | 39.60 years old |
| U.S. | 38.80 years old |
| | Baltimore County | % of the Total Population | Maryland | U.S. |
| Under 5 years | 49,347 | 6.03%, see rank | 6.24% | 6.36% |
| 5 to 9 years | 48,881 | 5.98%, see rank | 6.30% | 6.51% |
| 10 to 14 years | 48,727 | 5.96%, see rank | 6.41% | 6.59% |
| 15 to 19 years | 54,305 | 6.64%, see rank | 6.73% | 6.85% |
| 20 to 24 years | 57,476 | 7.03%, see rank | 6.84% | 7.13% |
| 25 to 34 years | 109,641 | 13.41%, see rank | 13.60% | 13.47% |
| 35 to 44 years | 101,470 | 12.41%, see rank | 13.23% | 12.96% |
| 45 to 54 years | 117,621 | 14.38%, see rank | 15.18% | 14.09% |
| 55 to 64 years | 106,483 | 13.02%, see rank | 12.50% | 12.29% |
| 65 to 74 years | 62,910 | 7.69%, see rank | 7.33% | 7.64% |
| 75 to 84 | 39,736 | 4.86%, see rank | 3.88% | 4.25% |
| 85 years and over | 21,123 | 2.58%, see rank | 1.77% | 1.85% |
US Census 2010 data
Total population: 805,029
Median Age (
see rank)
| Baltimore County | 39.10 years old |
| Maryland | 38.00 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Baltimore County | 37.30 years old |
| Maryland | 36.40 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Baltimore County | 40.60 years old |
| Maryland | 39.30 years old |
| U.S. | 38.50 years old |
| | Baltimore County | % of the Total Population | Maryland | U.S. |
| Under 5 years | 48,074 | 5.97%, see rank | 6.31% | 6.54% |
| 5 to 9 years | 47,454 | 5.89%, see rank | 6.35% | 6.59% |
| 10 to 14 years | 49,231 | 6.12%, see rank | 6.56% | 6.70% |
| 15 to 19 years | 56,294 | 6.99%, see rank | 7.04% | 7.14% |
| 20 to 24 years | 57,772 | 7.18%, see rank | 6.82% | 6.99% |
| 25 to 34 years | 103,555 | 12.86%, see rank | 13.20% | 13.30% |
| 35 to 44 years | 102,844 | 12.78%, see rank | 13.78% | 13.30% |
| 45 to 54 years | 121,216 | 15.06%, see rank | 15.63% | 14.58% |
| 55 to 64 years | 101,113 | 12.56%, see rank | 12.05% | 11.82% |
| 65 to 74 years | 56,470 | 7.01%, see rank | 6.69% | 7.03% |
| 75 to 84 | 40,325 | 5.01%, see rank | 3.87% | 4.23% |
| 85 years and over | 20,681 | 2.57%, see rank | 1.70% | 1.78% |
ACS 2008-2012 data
Total population: 807,318
Median Age (
see rank)
| Baltimore County | 39.00 years old |
| Maryland | 37.90 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Baltimore County | 37.30 years old |
| Maryland | 36.30 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Baltimore County | 40.60 years old |
| Maryland | 39.30 years old |
| U.S. | 38.50 years old |
| | Baltimore County | % of the Total Population | Maryland | U.S. |
| Under 5 years | 48,340 | 5.99%, see rank | 6.31% | 6.51% |
| 5 to 9 years | 47,046 | 5.83%, see rank | 6.30% | 6.57% |
| 10 to 14 years | 49,639 | 6.15%, see rank | 6.57% | 6.68% |
| 15 to 19 years | 55,928 | 6.93%, see rank | 7.01% | 7.09% |
| 20 to 24 years | 57,752 | 7.15%, see rank | 6.83% | 7.04% |
| 25 to 34 years | 104,896 | 12.99%, see rank | 13.25% | 13.32% |
| 35 to 44 years | 103,454 | 12.81%, see rank | 13.82% | 13.34% |
| 45 to 54 years | 120,256 | 14.90%, see rank | 15.46% | 14.44% |
| 55 to 64 years | 101,297 | 12.55%, see rank | 12.07% | 11.84% |
| 65 to 74 years | 57,647 | 7.14%, see rank | 6.78% | 7.12% |
| 75 to 84 | 40,225 | 4.98%, see rank | 3.89% | 4.25% |
| 85 years and over | 20,838 | 2.58%, see rank | 1.70% | 1.78% |
ACS 2006-2010 data
Total population: 799,195
Median Age (
see rank)
| Baltimore County | 38.90 years old |
| Maryland | 37.60 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| Baltimore County | 37.20 years old |
| Maryland | 36.10 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| Baltimore County | 40.50 years old |
| Maryland | 38.90 years old |
| U.S. | 38.10 years old |
| | Baltimore County | % of the Total Population | Maryland | U.S. |
| Under 5 years | 47,369 | 5.93%, see rank | 6.41% | 6.62% |
| 5 to 9 years | 46,664 | 5.84%, see rank | 6.42% | 6.62% |
| 10 to 14 years | 50,352 | 6.30%, see rank | 6.71% | 6.79% |
| 15 to 19 years | 56,961 | 7.13%, see rank | 7.23% | 7.28% |
| 20 to 24 years | 56,175 | 7.03%, see rank | 6.70% | 6.98% |
| 25 to 34 years | 102,149 | 12.78%, see rank | 12.99% | 13.22% |
| 35 to 44 years | 107,651 | 13.47%, see rank | 14.62% | 13.89% |
| 45 to 54 years | 120,885 | 15.13%, see rank | 15.49% | 14.57% |
| 55 to 64 years | 95,145 | 11.91%, see rank | 11.53% | 11.28% |
| 65 to 74 years | 54,547 | 6.83%, see rank | 6.36% | 6.74% |
| 75 to 84 | 42,563 | 5.33%, see rank | 3.96% | 4.30% |
| 85 years and over | 18,734 | 2.34%, see rank | 1.57% | 1.70% |
ACS 2005-2009 data
Total population: 786,697
Median Age (
see rank)
| Baltimore County | 38.40 years old |
| Maryland | 37.30 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| Baltimore County | 36.90 years old |
| Maryland | 35.80 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| Baltimore County | 40.00 years old |
| Maryland | 38.60 years old |
| U.S. | 37.90 years old |
| | Baltimore County | % of the Total Population | Maryland | U.S. |
| Under 5 years | 47,838 | 6.08%, see rank | 6.68% | 6.92% |
| 5 to 9 years | 45,846 | 5.83%, see rank | 6.40% | 6.59% |
| 10 to 14 years | 49,244 | 6.26%, see rank | 6.81% | 6.83% |
| 15 to 19 years | 54,951 | 6.99%, see rank | 7.19% | 7.15% |
| 20 to 24 years | 52,804 | 6.71%, see rank | 6.60% | 7.02% |
| 25 to 34 years | 106,749 | 13.57%, see rank | 13.09% | 13.42% |
| 35 to 44 years | 108,773 | 13.83%, see rank | 15.00% | 14.18% |
| 45 to 54 years | 119,069 | 15.14%, see rank | 15.36% | 14.48% |
| 55 to 64 years | 88,888 | 11.30%, see rank | 11.10% | 10.81% |
| 65 to 74 years | 53,660 | 6.82%, see rank | 6.29% | 6.50% |
| 75 to 84 | 42,046 | 5.34%, see rank | 3.96% | 4.40% |
| 85 years and over | 16,829 | 2.14%, see rank | 1.51% | 1.71% |
US Census 2000 data
Total population: 754,292
Median Age (
see rank)
| Baltimore County | 37.70 years old |
| Maryland | 36.00 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| Baltimore County | 36.40 years old |
| Maryland | 34.90 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| Baltimore County | 38.90 years old |
| Maryland | 37.00 years old |
| U.S. | 36.50 years old |
| | Baltimore County | % of the Total Population | Maryland | U.S. |
| Under 5 years | 45,252 | 6.00%, see rank | 6.67% | 6.81% |
| 5 to 9 years | 50,423 | 6.68%, see rank | 7.39% | 7.30% |
| 10 to 14 years | 52,541 | 6.97%, see rank | 7.40% | 7.29% |
| 15 to 19 years | 49,476 | 6.56%, see rank | 6.72% | 7.18% |
| 20 to 24 years | 45,112 | 5.98%, see rank | 5.93% | 6.74% |
| 25 to 34 years | 101,340 | 13.44%, see rank | 14.13% | 14.18% |
| 35 to 44 years | 123,444 | 16.37%, see rank | 17.30% | 16.04% |
| 45 to 54 years | 108,542 | 14.39%, see rank | 14.26% | 13.39% |
| 55 to 64 years | 67,827 | 8.99%, see rank | 8.88% | 8.63% |
| 65 to 74 years | 55,573 | 7.37%, see rank | 6.07% | 6.54% |
| 75 to 84 | 42,005 | 5.57%, see rank | 3.99% | 4.39% |
| 85 years and over | 12,757 | 1.69%, 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.
