Lewis And Clark County Historical Age Data
ACS 2010-2014 data
Total population: 64,772
Median Age (
see rank)
| Lewis And Clark County | 41.00 years old |
| Montana | 39.80 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| Lewis And Clark County | 39.90 years old |
| Montana | 38.60 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| Lewis And Clark County | 42.50 years old |
| Montana | 40.90 years old |
| U.S. | 38.80 years old |
| | Lewis And Clark County | % of the Total Population | Montana | U.S. |
| Under 5 years | 3,839 | 5.93%, see rank | 6.07% | 6.36% |
| 5 to 9 years | 4,362 | 6.73%, see rank | 6.39% | 6.51% |
| 10 to 14 years | 3,684 | 5.69%, see rank | 6.00% | 6.59% |
| 15 to 19 years | 4,076 | 6.29%, see rank | 6.51% | 6.85% |
| 20 to 24 years | 3,999 | 6.17%, see rank | 7.07% | 7.13% |
| 25 to 34 years | 7,898 | 12.19%, see rank | 12.49% | 13.47% |
| 35 to 44 years | 7,460 | 11.52%, see rank | 11.27% | 12.96% |
| 45 to 54 years | 9,617 | 14.85%, see rank | 13.90% | 14.09% |
| 55 to 64 years | 10,189 | 15.73%, see rank | 14.59% | 12.29% |
| 65 to 74 years | 5,568 | 8.60%, see rank | 8.89% | 7.64% |
| 75 to 84 | 2,825 | 4.36%, see rank | 4.77% | 4.25% |
| 85 years and over | 1,255 | 1.94%, see rank | 2.05% | 1.85% |
US Census 2010 data
Total population: 63,395
Median Age (
see rank)
| Lewis And Clark County | 40.90 years old |
| Montana | 39.80 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Lewis And Clark County | 39.80 years old |
| Montana | 38.80 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Lewis And Clark County | 41.90 years old |
| Montana | 41.00 years old |
| U.S. | 38.50 years old |
| | Lewis And Clark County | % of the Total Population | Montana | U.S. |
| Under 5 years | 3,948 | 6.23%, see rank | 6.31% | 6.54% |
| 5 to 9 years | 3,990 | 6.29%, see rank | 6.14% | 6.59% |
| 10 to 14 years | 4,010 | 6.33%, see rank | 6.18% | 6.70% |
| 15 to 19 years | 4,134 | 6.52%, see rank | 6.74% | 7.14% |
| 20 to 24 years | 3,847 | 6.07%, see rank | 6.79% | 6.99% |
| 25 to 34 years | 7,560 | 11.93%, see rank | 12.42% | 13.30% |
| 35 to 44 years | 7,418 | 11.70%, see rank | 11.42% | 13.30% |
| 45 to 54 years | 10,180 | 16.06%, see rank | 15.14% | 14.58% |
| 55 to 64 years | 9,551 | 15.07%, see rank | 14.03% | 11.82% |
| 65 to 74 years | 4,943 | 7.80%, see rank | 8.16% | 7.03% |
| 75 to 84 | 2,547 | 4.02%, see rank | 4.65% | 4.23% |
| 85 years and over | 1,267 | 2.00%, see rank | 2.02% | 1.78% |
ACS 2008-2012 data
Total population: 63,432
Median Age (
see rank)
| Lewis And Clark County | 40.70 years old |
| Montana | 39.90 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Lewis And Clark County | 39.60 years old |
| Montana | 38.80 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Lewis And Clark County | 42.20 years old |
| Montana | 41.00 years old |
| U.S. | 38.50 years old |
| | Lewis And Clark County | % of the Total Population | Montana | U.S. |
| Under 5 years | 3,843 | 6.06%, see rank | 6.14% | 6.51% |
| 5 to 9 years | 4,237 | 6.68%, see rank | 6.31% | 6.57% |
| 10 to 14 years | 3,813 | 6.01%, see rank | 6.12% | 6.68% |
| 15 to 19 years | 4,115 | 6.49%, see rank | 6.76% | 7.09% |
| 20 to 24 years | 3,804 | 6.00%, see rank | 6.91% | 7.04% |
| 25 to 34 years | 7,469 | 11.77%, see rank | 12.28% | 13.32% |
| 35 to 44 years | 7,555 | 11.91%, see rank | 11.53% | 13.34% |
| 45 to 54 years | 10,086 | 15.90%, see rank | 14.91% | 14.44% |
| 55 to 64 years | 9,669 | 15.24%, see rank | 14.10% | 11.84% |
| 65 to 74 years | 4,949 | 7.80%, see rank | 8.22% | 7.12% |
| 75 to 84 | 2,880 | 4.54%, see rank | 4.74% | 4.25% |
| 85 years and over | 1,012 | 1.60%, see rank | 1.97% | 1.78% |
ACS 2006-2010 data
Total population: 61,643
Median Age (
see rank)
| Lewis And Clark County | 40.70 years old |
| Montana | 39.70 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| Lewis And Clark County | 39.50 years old |
| Montana | 38.60 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| Lewis And Clark County | 42.00 years old |
| Montana | 40.90 years old |
| U.S. | 38.10 years old |
| | Lewis And Clark County | % of the Total Population | Montana | U.S. |
| Under 5 years | 3,662 | 5.94%, see rank | 6.13% | 6.62% |
| 5 to 9 years | 4,160 | 6.75%, see rank | 6.20% | 6.62% |
| 10 to 14 years | 3,934 | 6.38%, see rank | 6.33% | 6.79% |
| 15 to 19 years | 4,220 | 6.85%, see rank | 7.14% | 7.28% |
| 20 to 24 years | 3,753 | 6.09%, see rank | 7.02% | 6.98% |
| 25 to 34 years | 6,908 | 11.21%, see rank | 11.87% | 13.22% |
| 35 to 44 years | 7,589 | 12.31%, see rank | 12.02% | 13.89% |
| 45 to 54 years | 10,339 | 16.77%, see rank | 15.65% | 14.57% |
| 55 to 64 years | 8,845 | 14.35%, see rank | 13.27% | 11.28% |
| 65 to 74 years | 4,420 | 7.17%, see rank | 7.69% | 6.74% |
| 75 to 84 | 2,852 | 4.63%, see rank | 4.86% | 4.30% |
| 85 years and over | 961 | 1.56%, see rank | 1.82% | 1.70% |
ACS 2005-2009 data
Total population: 60,081
Median Age (
see rank)
| Lewis And Clark County | 40.40 years old |
| Montana | 39.00 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| Lewis And Clark County | 38.90 years old |
| Montana | 37.70 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| Lewis And Clark County | 41.50 years old |
| Montana | 40.20 years old |
| U.S. | 37.90 years old |
| | Lewis And Clark County | % of the Total Population | Montana | U.S. |
| Under 5 years | 3,558 | 5.92%, see rank | 6.21% | 6.92% |
| 5 to 9 years | 3,686 | 6.14%, see rank | 6.08% | 6.59% |
| 10 to 14 years | 3,984 | 6.63%, see rank | 6.35% | 6.83% |
| 15 to 19 years | 4,296 | 7.15%, see rank | 7.34% | 7.15% |
| 20 to 24 years | 3,701 | 6.16%, see rank | 7.81% | 7.02% |
| 25 to 34 years | 6,894 | 11.47%, see rank | 11.76% | 13.42% |
| 35 to 44 years | 7,789 | 12.96%, see rank | 12.26% | 14.18% |
| 45 to 54 years | 10,136 | 16.87%, see rank | 15.63% | 14.48% |
| 55 to 64 years | 8,278 | 13.78%, see rank | 12.47% | 10.81% |
| 65 to 74 years | 4,125 | 6.87%, see rank | 7.28% | 6.50% |
| 75 to 84 | 2,685 | 4.47%, see rank | 4.90% | 4.40% |
| 85 years and over | 949 | 1.58%, see rank | 1.91% | 1.71% |
US Census 2000 data
Total population: 55,716
Median Age (
see rank)
| Lewis And Clark County | 38.00 years old |
| Montana | 37.50 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| Lewis And Clark County | 37.40 years old |
| Montana | 36.60 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| Lewis And Clark County | 38.70 years old |
| Montana | 38.50 years old |
| U.S. | 36.50 years old |
| | Lewis And Clark County | % of the Total Population | Montana | U.S. |
| Under 5 years | 3,435 | 6.17%, see rank | 6.08% | 6.81% |
| 5 to 9 years | 3,873 | 6.95%, see rank | 6.87% | 7.30% |
| 10 to 14 years | 4,233 | 7.60%, see rank | 7.68% | 7.29% |
| 15 to 19 years | 4,299 | 7.72%, see rank | 7.90% | 7.18% |
| 20 to 24 years | 3,161 | 5.67%, see rank | 6.47% | 6.74% |
| 25 to 34 years | 6,265 | 11.24%, see rank | 11.45% | 14.18% |
| 35 to 44 years | 9,294 | 16.68%, see rank | 15.73% | 16.04% |
| 45 to 54 years | 9,337 | 16.76%, see rank | 14.97% | 13.39% |
| 55 to 64 years | 5,286 | 9.49%, see rank | 9.43% | 8.63% |
| 65 to 74 years | 3,431 | 6.16%, see rank | 6.93% | 6.54% |
| 75 to 84 | 2,327 | 4.18%, see rank | 4.78% | 4.39% |
| 85 years and over | 775 | 1.39%, see rank | 1.70% | 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.
