San Marcos, TX Historical Age Data
ACS 2010-2014 data
Total population: 51,289
Median Age (
see rank)
| San Marcos, TX | 23.40 years old |
| Texas | 33.90 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| San Marcos, TX | 23.90 years old |
| Texas | 32.90 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| San Marcos, TX | 22.90 years old |
| Texas | 35.00 years old |
| U.S. | 38.80 years old |
| | San Marcos, TX | % of the Total Population | Texas | U.S. |
| Under 5 years | 2,298 | 4.48%, see rank | 7.44% | 6.36% |
| 5 to 9 years | 1,988 | 3.88%, see rank | 7.58% | 6.51% |
| 10 to 14 years | 1,971 | 3.84%, see rank | 7.42% | 6.59% |
| 15 to 19 years | 6,854 | 13.36%, see rank | 7.25% | 6.85% |
| 20 to 24 years | 16,345 | 31.87%, see rank | 7.36% | 7.13% |
| 25 to 34 years | 8,557 | 16.68%, see rank | 14.44% | 13.47% |
| 35 to 44 years | 3,772 | 7.35%, see rank | 13.63% | 12.96% |
| 45 to 54 years | 3,164 | 6.17%, see rank | 13.23% | 14.09% |
| 55 to 64 years | 2,909 | 5.67%, see rank | 10.74% | 12.29% |
| 65 to 74 years | 1,670 | 3.26%, see rank | 6.32% | 7.64% |
| 75 to 84 | 1,106 | 2.16%, see rank | 3.33% | 4.25% |
| 85 years and over | 655 | 1.28%, see rank | 1.27% | 1.85% |
US Census 2010 data
Total population: 44,894
Median Age (
see rank)
| San Marcos, TX | 23.10 years old |
| Texas | 33.60 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| San Marcos, TX | 23.50 years old |
| Texas | 32.60 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| San Marcos, TX | 22.70 years old |
| Texas | 34.60 years old |
| U.S. | 38.50 years old |
| | San Marcos, TX | % of the Total Population | Texas | U.S. |
| Under 5 years | 1,983 | 4.42%, see rank | 7.67% | 6.54% |
| 5 to 9 years | 1,719 | 3.83%, see rank | 7.67% | 6.59% |
| 10 to 14 years | 1,654 | 3.68%, see rank | 7.48% | 6.70% |
| 15 to 19 years | 6,210 | 13.83%, see rank | 7.49% | 7.14% |
| 20 to 24 years | 14,916 | 33.22%, see rank | 7.23% | 6.99% |
| 25 to 34 years | 6,835 | 15.22%, see rank | 14.37% | 13.30% |
| 35 to 44 years | 3,296 | 7.34%, see rank | 13.75% | 13.30% |
| 45 to 54 years | 2,829 | 6.30%, see rank | 13.66% | 14.58% |
| 55 to 64 years | 2,459 | 5.48%, see rank | 10.33% | 11.82% |
| 65 to 74 years | 1,428 | 3.18%, see rank | 5.85% | 7.03% |
| 75 to 84 | 1,019 | 2.27%, see rank | 3.28% | 4.23% |
| 85 years and over | 546 | 1.22%, see rank | 1.21% | 1.78% |
ACS 2008-2012 data
Total population: 46,131
Median Age (
see rank)
| San Marcos, TX | 23.00 years old |
| Texas | 33.60 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| San Marcos, TX | 23.40 years old |
| Texas | 32.60 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| San Marcos, TX | 22.60 years old |
| Texas | 34.70 years old |
| U.S. | 38.50 years old |
| | San Marcos, TX | % of the Total Population | Texas | U.S. |
| Under 5 years | 2,400 | 5.20%, see rank | 7.65% | 6.51% |
| 5 to 9 years | 1,890 | 4.10%, see rank | 7.62% | 6.57% |
| 10 to 14 years | 1,531 | 3.32%, see rank | 7.44% | 6.68% |
| 15 to 19 years | 7,588 | 16.45%, see rank | 7.45% | 7.09% |
| 20 to 24 years | 13,936 | 30.21%, see rank | 7.29% | 7.04% |
| 25 to 34 years | 6,799 | 14.74%, see rank | 14.37% | 13.32% |
| 35 to 44 years | 3,733 | 8.09%, see rank | 13.80% | 13.34% |
| 45 to 54 years | 2,758 | 5.98%, see rank | 13.54% | 14.44% |
| 55 to 64 years | 2,425 | 5.26%, see rank | 10.37% | 11.84% |
| 65 to 74 years | 1,525 | 3.31%, see rank | 5.93% | 7.12% |
| 75 to 84 | 1,089 | 2.36%, see rank | 3.29% | 4.25% |
| 85 years and over | 457 | 0.99%, see rank | 1.23% | 1.78% |
ACS 2006-2010 data
Total population: 43,282
Median Age (
see rank)
| San Marcos, TX | 22.90 years old |
| Texas | 33.40 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| San Marcos, TX | 23.50 years old |
| Texas | 32.40 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| San Marcos, TX | 22.50 years old |
| Texas | 34.50 years old |
| U.S. | 38.10 years old |
| | San Marcos, TX | % of the Total Population | Texas | U.S. |
| Under 5 years | 1,937 | 4.48%, see rank | 7.83% | 6.62% |
| 5 to 9 years | 1,773 | 4.10%, see rank | 7.59% | 6.62% |
| 10 to 14 years | 1,812 | 4.19%, see rank | 7.45% | 6.79% |
| 15 to 19 years | 6,725 | 15.54%, see rank | 7.61% | 7.28% |
| 20 to 24 years | 13,612 | 31.45%, see rank | 7.34% | 6.98% |
| 25 to 34 years | 6,413 | 14.82%, see rank | 14.36% | 13.22% |
| 35 to 44 years | 3,304 | 7.63%, see rank | 14.12% | 13.89% |
| 45 to 54 years | 2,797 | 6.46%, see rank | 13.67% | 14.57% |
| 55 to 64 years | 2,117 | 4.89%, see rank | 9.89% | 11.28% |
| 65 to 74 years | 1,321 | 3.05%, see rank | 5.65% | 6.74% |
| 75 to 84 | 1,112 | 2.57%, see rank | 3.30% | 4.30% |
| 85 years and over | 359 | 0.83%, see rank | 1.19% | 1.70% |
ACS 2005-2009 data
Total population: 49,565
Median Age (
see rank)
| San Marcos, TX | 23.00 years old |
| Texas | 33.00 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| San Marcos, TX | 23.70 years old |
| Texas | 31.90 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| San Marcos, TX | 22.50 years old |
| Texas | 34.10 years old |
| U.S. | 37.90 years old |
| | San Marcos, TX | % of the Total Population | Texas | U.S. |
| Under 5 years | 2,286 | 4.61%, see rank | 8.37% | 6.92% |
| 5 to 9 years | 2,024 | 4.08%, see rank | 7.56% | 6.59% |
| 10 to 14 years | 2,253 | 4.55%, see rank | 7.48% | 6.83% |
| 15 to 19 years | 6,358 | 12.83%, see rank | 7.37% | 7.15% |
| 20 to 24 years | 16,392 | 33.07%, see rank | 7.41% | 7.02% |
| 25 to 34 years | 6,337 | 12.79%, see rank | 14.64% | 13.42% |
| 35 to 44 years | 4,103 | 8.28%, see rank | 14.22% | 14.18% |
| 45 to 54 years | 3,598 | 7.26%, see rank | 13.44% | 14.48% |
| 55 to 64 years | 3,016 | 6.08%, see rank | 9.42% | 10.81% |
| 65 to 74 years | 1,502 | 3.03%, see rank | 5.43% | 6.50% |
| 75 to 84 | 1,246 | 2.51%, see rank | 3.42% | 4.40% |
| 85 years and over | 450 | 0.91%, see rank | 1.24% | 1.71% |
US Census 2000 data
Total population: 34,733
Median Age (
see rank)
| San Marcos, TX | 23.30 years old |
| Texas | 32.30 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| San Marcos, TX | 23.80 years old |
| Texas | 31.30 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| San Marcos, TX | 22.90 years old |
| Texas | 33.40 years old |
| U.S. | 36.50 years old |
| | San Marcos, TX | % of the Total Population | Texas | U.S. |
| Under 5 years | 1,718 | 4.95%, see rank | 7.79% | 6.81% |
| 5 to 9 years | 1,414 | 4.07%, see rank | 7.93% | 7.30% |
| 10 to 14 years | 1,325 | 3.81%, see rank | 7.82% | 7.29% |
| 15 to 19 years | 4,167 | 12.00%, see rank | 7.85% | 7.18% |
| 20 to 24 years | 11,274 | 32.46%, see rank | 7.38% | 6.74% |
| 25 to 34 years | 5,567 | 16.03%, see rank | 15.16% | 14.18% |
| 35 to 44 years | 3,040 | 8.75%, see rank | 15.93% | 16.04% |
| 45 to 54 years | 2,250 | 6.48%, see rank | 12.52% | 13.39% |
| 55 to 64 years | 1,471 | 4.24%, see rank | 7.66% | 8.63% |
| 65 to 74 years | 1,158 | 3.33%, see rank | 5.48% | 6.54% |
| 75 to 84 | 904 | 2.60%, see rank | 3.32% | 4.39% |
| 85 years and over | 445 | 1.28%, see rank | 1.14% | 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.
