New Castle County Historical Age Data
ACS 2010-2014 data
Total population: 545,846
Median Age (
see rank)
| New Castle County | 37.30 years old |
| Delaware | 39.10 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| New Castle County | 35.90 years old |
| Delaware | 37.70 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| New Castle County | 38.60 years old |
| Delaware | 40.40 years old |
| U.S. | 38.80 years old |
| | New Castle County | % of the Total Population | Delaware | U.S. |
| Under 5 years | 33,237 | 6.09%, see rank | 6.10% | 6.36% |
| 5 to 9 years | 34,856 | 6.39%, see rank | 6.28% | 6.51% |
| 10 to 14 years | 33,790 | 6.19%, see rank | 6.14% | 6.59% |
| 15 to 19 years | 38,965 | 7.14%, see rank | 6.70% | 6.85% |
| 20 to 24 years | 41,041 | 7.52%, see rank | 7.08% | 7.13% |
| 25 to 34 years | 74,565 | 13.66%, see rank | 12.79% | 13.47% |
| 35 to 44 years | 70,691 | 12.95%, see rank | 12.26% | 12.96% |
| 45 to 54 years | 80,807 | 14.80%, see rank | 14.38% | 14.09% |
| 55 to 64 years | 67,035 | 12.28%, see rank | 12.89% | 12.29% |
| 65 to 74 years | 39,324 | 7.20%, see rank | 8.88% | 7.64% |
| 75 to 84 | 21,899 | 4.01%, see rank | 4.62% | 4.25% |
| 85 years and over | 9,636 | 1.77%, see rank | 1.89% | 1.85% |
US Census 2010 data
Total population: 538,479
Median Age (
see rank)
| New Castle County | 37.20 years old |
| Delaware | 38.80 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| New Castle County | 35.70 years old |
| Delaware | 37.40 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| New Castle County | 38.60 years old |
| Delaware | 40.10 years old |
| U.S. | 38.50 years old |
| | New Castle County | % of the Total Population | Delaware | U.S. |
| Under 5 years | 33,249 | 6.17%, see rank | 6.22% | 6.54% |
| 5 to 9 years | 34,123 | 6.34%, see rank | 6.29% | 6.59% |
| 10 to 14 years | 35,040 | 6.51%, see rank | 6.33% | 6.70% |
| 15 to 19 years | 40,966 | 7.61%, see rank | 7.19% | 7.14% |
| 20 to 24 years | 40,457 | 7.51%, see rank | 7.00% | 6.99% |
| 25 to 34 years | 70,744 | 13.14%, see rank | 12.41% | 13.30% |
| 35 to 44 years | 73,298 | 13.61%, see rank | 12.93% | 13.30% |
| 45 to 54 years | 81,987 | 15.23%, see rank | 14.87% | 14.58% |
| 55 to 64 years | 62,393 | 11.59%, see rank | 12.35% | 11.82% |
| 65 to 74 years | 35,495 | 6.59%, see rank | 8.07% | 7.03% |
| 75 to 84 | 21,531 | 4.00%, see rank | 4.57% | 4.23% |
| 85 years and over | 9,196 | 1.71%, see rank | 1.75% | 1.78% |
ACS 2008-2012 data
Total population: 539,665
Median Age (
see rank)
| New Castle County | 37.00 years old |
| Delaware | 38.70 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| New Castle County | 35.70 years old |
| Delaware | 37.30 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| New Castle County | 38.30 years old |
| Delaware | 40.00 years old |
| U.S. | 38.50 years old |
| | New Castle County | % of the Total Population | Delaware | U.S. |
| Under 5 years | 33,415 | 6.19%, see rank | 6.23% | 6.51% |
| 5 to 9 years | 35,377 | 6.56%, see rank | 6.38% | 6.57% |
| 10 to 14 years | 33,671 | 6.24%, see rank | 6.22% | 6.68% |
| 15 to 19 years | 40,461 | 7.50%, see rank | 7.06% | 7.09% |
| 20 to 24 years | 40,681 | 7.54%, see rank | 7.08% | 7.04% |
| 25 to 34 years | 71,760 | 13.30%, see rank | 12.48% | 13.32% |
| 35 to 44 years | 73,234 | 13.57%, see rank | 12.90% | 13.34% |
| 45 to 54 years | 81,276 | 15.06%, see rank | 14.71% | 14.44% |
| 55 to 64 years | 62,917 | 11.66%, see rank | 12.41% | 11.84% |
| 65 to 74 years | 36,041 | 6.68%, see rank | 8.20% | 7.12% |
| 75 to 84 | 21,651 | 4.01%, see rank | 4.54% | 4.25% |
| 85 years and over | 9,181 | 1.70%, see rank | 1.81% | 1.78% |
ACS 2006-2010 data
Total population: 533,514
Median Age (
see rank)
| New Castle County | 36.80 years old |
| Delaware | 38.30 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| New Castle County | 35.50 years old |
| Delaware | 36.90 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| New Castle County | 37.90 years old |
| Delaware | 39.50 years old |
| U.S. | 38.10 years old |
| | New Castle County | % of the Total Population | Delaware | U.S. |
| Under 5 years | 33,708 | 6.32%, see rank | 6.36% | 6.62% |
| 5 to 9 years | 35,012 | 6.56%, see rank | 6.39% | 6.62% |
| 10 to 14 years | 34,164 | 6.40%, see rank | 6.34% | 6.79% |
| 15 to 19 years | 41,036 | 7.69%, see rank | 7.28% | 7.28% |
| 20 to 24 years | 39,056 | 7.32%, see rank | 6.93% | 6.98% |
| 25 to 34 years | 70,971 | 13.30%, see rank | 12.48% | 13.22% |
| 35 to 44 years | 76,419 | 14.32%, see rank | 13.67% | 13.89% |
| 45 to 54 years | 80,395 | 15.07%, see rank | 14.73% | 14.57% |
| 55 to 64 years | 58,671 | 11.00%, see rank | 11.88% | 11.28% |
| 65 to 74 years | 33,694 | 6.32%, see rank | 7.70% | 6.74% |
| 75 to 84 | 21,441 | 4.02%, see rank | 4.48% | 4.30% |
| 85 years and over | 8,947 | 1.68%, see rank | 1.77% | 1.70% |
ACS 2005-2009 data
Total population: 527,774
Median Age (
see rank)
| New Castle County | 36.30 years old |
| Delaware | 37.80 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| New Castle County | 34.90 years old |
| Delaware | 36.30 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| New Castle County | 37.50 years old |
| Delaware | 39.10 years old |
| U.S. | 37.90 years old |
| | New Castle County | % of the Total Population | Delaware | U.S. |
| Under 5 years | 35,895 | 6.80%, see rank | 6.75% | 6.92% |
| 5 to 9 years | 34,100 | 6.46%, see rank | 6.36% | 6.59% |
| 10 to 14 years | 34,967 | 6.63%, see rank | 6.50% | 6.83% |
| 15 to 19 years | 39,406 | 7.47%, see rank | 7.06% | 7.15% |
| 20 to 24 years | 35,101 | 6.65%, see rank | 6.53% | 7.02% |
| 25 to 34 years | 74,699 | 14.15%, see rank | 13.03% | 13.42% |
| 35 to 44 years | 77,962 | 14.77%, see rank | 14.09% | 14.18% |
| 45 to 54 years | 78,119 | 14.80%, see rank | 14.49% | 14.48% |
| 55 to 64 years | 55,607 | 10.54%, see rank | 11.44% | 10.81% |
| 65 to 74 years | 31,126 | 5.90%, see rank | 7.30% | 6.50% |
| 75 to 84 | 22,029 | 4.17%, see rank | 4.68% | 4.40% |
| 85 years and over | 8,763 | 1.66%, see rank | 1.78% | 1.71% |
US Census 2000 data
Total population: 500,265
Median Age (
see rank)
| New Castle County | 35.00 years old |
| Delaware | 36.00 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| New Castle County | 33.90 years old |
| Delaware | 34.90 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| New Castle County | 36.00 years old |
| Delaware | 37.10 years old |
| U.S. | 36.50 years old |
| | New Castle County | % of the Total Population | Delaware | U.S. |
| Under 5 years | 33,384 | 6.67%, see rank | 6.58% | 6.81% |
| 5 to 9 years | 36,150 | 7.23%, see rank | 7.12% | 7.30% |
| 10 to 14 years | 34,961 | 6.99%, see rank | 7.05% | 7.29% |
| 15 to 19 years | 36,309 | 7.26%, see rank | 7.10% | 7.18% |
| 20 to 24 years | 35,499 | 7.10%, see rank | 6.59% | 6.74% |
| 25 to 34 years | 73,869 | 14.77%, see rank | 13.89% | 14.18% |
| 35 to 44 years | 83,616 | 16.71%, see rank | 16.28% | 16.04% |
| 45 to 54 years | 66,882 | 13.37%, see rank | 13.27% | 13.39% |
| 55 to 64 years | 41,692 | 8.33%, see rank | 9.13% | 8.63% |
| 65 to 74 years | 30,904 | 6.18%, see rank | 7.20% | 6.54% |
| 75 to 84 | 20,556 | 4.11%, see rank | 4.44% | 4.39% |
| 85 years and over | 6,443 | 1.29%, see rank | 1.35% | 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.
