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Population by Age in Lake San Marcos
*Base on 2010 Data
| Total population | 4,437 | 100.00% |
| Under 5 years | 106 | 2.39% |
| 5 to 9 years | 95 | 2.14% |
| 10 to 14 years | 100 | 2.25% |
| 15 to 19 years | 115 | 2.59% |
| 20 to 24 years | 134 | 3.02% |
| 25 to 29 years | 121 | 2.73% |
| 30 to 34 years | 132 | 2.97% |
| 35 to 39 years | 155 | 3.49% |
| 40 to 44 years | 189 | 4.26% |
| 45 to 49 years | 242 | 5.45% |
| 50 to 54 years | 265 | 5.97% |
| 55 to 59 years | 319 | 7.19% |
| 60 to 64 years | 386 | 8.70% |
| 65 to 69 years | 421 | 9.49% |
| 70 to 74 years | 346 | 7.80% |
| 75 to 79 years | 360 | 8.11% |
| 80 to 84 years | 443 | 9.98% |
| 85 years and over | 508 | 11.45% |
Male Population in Lake San Marcos
*Base on 2010 Data
| Male population | 1,963 | 44.24% |
| Under 5 years | 57 | 1.28% |
| 5 to 9 years | 60 | 1.35% |
| 10 to 14 years | 43 | 0.97% |
| 15 to 19 years | 65 | 1.46% |
| 20 to 24 years | 61 | 1.37% |
| 25 to 29 years | 54 | 1.22% |
| 30 to 34 years | 74 | 1.67% |
| 35 to 39 years | 78 | 1.76% |
| 40 to 44 years | 97 | 2.19% |
| 45 to 49 years | 108 | 2.43% |
| 50 to 54 years | 119 | 2.68% |
| 55 to 59 years | 137 | 3.09% |
| 60 to 64 years | 150 | 3.38% |
| 65 to 69 years | 181 | 4.08% |
| 70 to 74 years | 154 | 3.47% |
| 75 to 79 years | 138 | 3.11% |
| 80 to 84 years | 184 | 4.15% |
| 85 years and over | 203 | 4.58% |
Female Population in Lake San Marcos
*Base on 2010 Data
| Female population | 2,474 | 55.76% |
| Under 5 years | 49 | 1.10% |
| 5 to 9 years | 35 | 0.79% |
| 10 to 14 years | 57 | 1.28% |
| 15 to 19 years | 50 | 1.13% |
| 20 to 24 years | 73 | 1.65% |
| 25 to 29 years | 67 | 1.51% |
| 30 to 34 years | 58 | 1.31% |
| 35 to 39 years | 77 | 1.74% |
| 40 to 44 years | 92 | 2.07% |
| 45 to 49 years | 134 | 3.02% |
| 50 to 54 years | 146 | 3.29% |
| 55 to 59 years | 182 | 4.10% |
| 60 to 64 years | 236 | 5.32% |
| 65 to 69 years | 240 | 5.41% |
| 70 to 74 years | 192 | 4.33% |
| 75 to 79 years | 222 | 5.00% |
| 80 to 84 years | 259 | 5.84% |
| 85 years and over | 305 | 6.87% |
Median Age in Lake San Marcos
*Base on 2010 Data
| Both | 63.30% | |
| Male | 61.00% | |
| Female | 64.60% |
Race in Lake San Marcos
*Base on 2010 Data
| Total | 4,437 | 100.00% |
| Population of one race | 4,357 | 98.20% |
| White | 3,978 | 89.66% |
| Black or African American | 37 | 0.83% |
| American Indian and Alaska Native | 20 | 0.45% |
| Asian | 133 | 3.00% |
| Asian Indian | 21 | 0.47% |
| Chinese | 27 | 0.61% |
| Filipino | 38 | 0.86% |
| Japanese | 21 | 0.47% |
| Korean | 12 | 0.27% |
| Vietnamese | 7 | 0.16% |
| Other Asian | 7 | 0.16% |
| Native Hawaiian and Other Pacific Islander | 3 | 0.07% |
| Native Hawaiian | 2 | 0.05% |
| Guamanian or Chamorro | 0 | 0.00% |
| Samoan | 0 | 0.00% |
| Other Pacific Islander | 1 | 0.02% |
| Some Other Race | 186 | 4.19% |
| Population of Two or More Races | 80 | 1.80% |
| White; American Indian and Alaska Native | 10 | 0.23% |
| White; Asian | 37 | 0.83% |
| White; Black or African American | 10 | 0.23% |
| White; Some Other Race | 9 | 0.20% |
The Population 16 Years in Lake San Marcos
*Base on 2010 Data
| Total | 4,110 | 100.00% |
| Male | 1,791 | 43.58% |
| Female | 2,319 | 56.42% |
The Population 18 Years in Lake San Marcos
*Base on 2010 Data
| Total | 4,071 | 100.00% |
| Male | 1,767 | 43.40% |
| Female | 2,304 | 56.60% |
The Population 21 Years in Lake San Marcos
*Base on 2010 Data
| Total | 3,998 | 100.00% |
| Male | 1,727 | 43.20% |
| Female | 2,271 | 56.80% |
The Population 62 Years in Lake San Marcos
*Base on 2010 Data
| Total | 2,344 | 100.00% |
| Male | 960 | 40.96% |
| Female | 1,384 | 59.04% |
The Population 65 Years in Lake San Marcos
*Base on 2010 Data
| Total | 2,078 | 100.00% |
| Male | 860 | 41.39% |
| Female | 1,218 | 58.61% |
Race (total races tallied) in Lake San Marcos
*Base on 2010 Data
| White alone or in combination with one or more other races | 4,050 | 89.60% |
| Black or African American alone or in combination with one or more other races | 53 | 1.17% |
| American Indian and Alaska Native alone or in combination with one or more other races | 35 | 0.77% |
| Asian alone or in combination with one or more other races | 176 | 3.89% |
| Native Hawaiian and Other Pacific Islander alone or in combination with one or more other races | 7 | 0.15% |
| Some Other Race alone or in combination with one or more other races | 199 | 4.40% |
Hispanic or Latino by Specific Origin in Lake San Marcos
*Base on 2010 Data
| Total | 4,437 | 100.00% |
| Hispanic or Latino (of any race) | 464 | 10.46% |
| Mexican | 364 | 8.20% |
| Puerto Rican | 14 | 0.32% |
| Cuban | 11 | 0.25% |
| Other Hispanic or Latino | 75 | 1.69% |
| Not Hispanic or Latino | 3,973 | 89.54% |
Hispanic or Latino and Race in Lake San Marcos
*Base on 2010 Data
| Total | 4,437 | 100.00% |
| Hispanic or Latino | 464 | 10.46% |
| White alone | 266 | 6.00% |
| Black or African American alone | 2 | 0.05% |
| American Indian and Alaska Native alone | 6 | 0.14% |
| Asian alone | 1 | 0.02% |
| Native Hawaiian and Other Pacific Islander alone | 0 | 0.00% |
| Some Other Race alone | 177 | 3.99% |
| Two or More Races | 12 | 0.27% |
| Not Hispanic or Latino | 3,973 | 89.54% |
| White alone | 3,712 | 83.66% |
| Black or African American alone | 35 | 0.79% |
| American Indian and Alaska Native alone | 14 | 0.32% |
| Asian alone | 132 | 2.97% |
| Native Hawaiian and Other Pacific Islander alone | 3 | 0.07% |
| Some Other Race alone | 9 | 0.20% |
| Two or More Races | 68 | 1.53% |
Relationship in Lake San Marcos
*Base on 2010 Data
| Total | 4,437 | 100.00% |
| In households | 4,435 | 99.95% |
| Householder | 2,328 | 52.47% |
| Spouse | 1,112 | 25.06% |
| Child | 575 | 12.96% |
| Own child under 18 years | 309 | 6.96% |
| Other relatives | 192 | 4.33% |
| Under 18 years | 51 | 1.15% |
| 65 years and over | 47 | 1.06% |
| Nonrelatives | 228 | 5.14% |
| Under 18 years | 6 | 0.14% |
| 65 years and over | 41 | 0.92% |
| Unmarried partner | 97 | 2.19% |
| In group quarters | 2 | 0.05% |
| Institutionalized population | 2 | 0.05% |
| Male | 2 | 0.05% |
| Female | 0 | 0.00% |
| Noninstitutionalized population | 0 | 0.00% |
| Male | 0 | 0.00% |
| Female | 0 | 0.00% |
Households by Type in Lake San Marcos
*Base on 2010 Data
| Subject | Number | Percent |
|---|---|---|
| Total | 2,328 | 100.00% |
| Family households (families) | 1,299 | 55.80% |
| With own children under 18 years | 190 | 8.16% |
| Husband-wife family | 1,112 | 47.77% |
| With own children under 18 years | 151 | 6.49% |
| Male householder, no wife present | 56 | 2.41% |
| With own children under 18 years | 14 | 0.60% |
| Female householder, no husband present | 131 | 5.63% |
| With own children under 18 years | 25 | 1.07% |
| Nonfamily households | 1,029 | 44.20% |
| Householder living alone | 877 | 37.67% |
| Male | 230 | 9.88% |
| 65 years and over | 141 | 6.06% |
| Female | 647 | 27.79% |
| 65 years and over | 518 | 22.25% |
Households with individuals under 18 years in Lake San Marcos
*Base on 2010 Data
| Total | 221 | 9.49% |
Households with individuals under 65 years in Lake San Marcos
*Base on 2010 Data
| Total | 1,492 | 64.09% |
Average Household Size in Lake San Marcos
*Base on 2010 Data
| Average household size | 2 | % |
Average Family Size in Lake San Marcos
*Base on 2010 Data
| Average family size | 2 | % |
Housing Occupancy(Total housing units) in Lake San Marcos
*Base on 2010 Data
| Total | 2,533 | 100.00% |
| Occupied housing units | 2,328 | 91.91% |
| Vacant housing units | 205 | 8.09% |
| For rent | 28 | 1.11% |
| Rented, not occupied | 4 | 0.16% |
| For sale only | 44 | 1.74% |
| Sold, not occupied | 13 | 0.51% |
| For seasonal, recreational, or occasional use | 67 | 2.65% |
| All other vacants | 49 | 1.93% |
Homeowner Vacancy Rate in Lake San Marcos
*Base on 2010 Data
| Homeowner vacancy rate (percent) | 2.30% |
Rental Vacancy Rate in Lake San Marcos
*Base on 2010 Data
| Rental vacancy rate (percent) | 5.30% |
Housing Tenure(Occupied housing units) in Lake San Marcos
*Base on 2010 Data
| Total | 2,328 | 100.00% |
| Owner-occupied housing units | 1,835 | 78.82% |
| Renter-occupied housing units | 493 | 21.18% |
Population in Occupied Housing Units by Tenure(Population in occupied housing units) in Lake San Marcos
*Base on 2010 Data
| Owner-occupied housing units | 3,417 | 77.05% |
| Renter-occupied housing units | 1,018 | 22.95% |
Average Household Size of Occupied Housing Units by Tenure in Lake San Marcos
*Base on 2010 Data
| Owner occupied | 2 | % |
| Renter occupied | 2 | % |