Population by Age in Loudoun County
*Base on 2010 Data
| Total population | 312,311 | 100.00% |
| Under 5 years | 27,538 | 8.82% |
| 5 to 9 years | 28,998 | 9.28% |
| 10 to 14 years | 25,273 | 8.09% |
| 15 to 19 years | 19,233 | 6.16% |
| 20 to 24 years | 12,720 | 4.07% |
| 25 to 29 years | 18,817 | 6.03% |
| 30 to 34 years | 24,666 | 7.90% |
| 35 to 39 years | 29,390 | 9.41% |
| 40 to 44 years | 29,563 | 9.47% |
| 45 to 49 years | 27,741 | 8.88% |
| 50 to 54 years | 21,111 | 6.76% |
| 55 to 59 years | 15,167 | 4.86% |
| 60 to 64 years | 11,669 | 3.74% |
| 65 to 69 years | 7,613 | 2.44% |
| 70 to 74 years | 4,628 | 1.48% |
| 75 to 79 years | 3,475 | 1.11% |
| 80 to 84 years | 2,424 | 0.78% |
| 85 years and over | 2,285 | 0.73% |
Male Population in Loudoun County
*Base on 2010 Data
| Male population | 154,078 | 49.33% |
| Under 5 years | 13,986 | 4.48% |
| 5 to 9 years | 14,712 | 4.71% |
| 10 to 14 years | 12,730 | 4.08% |
| 15 to 19 years | 9,957 | 3.19% |
| 20 to 24 years | 6,516 | 2.09% |
| 25 to 29 years | 8,923 | 2.86% |
| 30 to 34 years | 11,418 | 3.66% |
| 35 to 39 years | 14,545 | 4.66% |
| 40 to 44 years | 14,697 | 4.71% |
| 45 to 49 years | 13,915 | 4.46% |
| 50 to 54 years | 10,576 | 3.39% |
| 55 to 59 years | 7,429 | 2.38% |
| 60 to 64 years | 5,772 | 1.85% |
| 65 to 69 years | 3,565 | 1.14% |
| 70 to 74 years | 2,116 | 0.68% |
| 75 to 79 years | 1,537 | 0.49% |
| 80 to 84 years | 917 | 0.29% |
| 85 years and over | 767 | 0.25% |
Female Population in Loudoun County
*Base on 2010 Data
| Female population | 158,233 | 50.67% |
| Under 5 years | 13,552 | 4.34% |
| 5 to 9 years | 14,286 | 4.57% |
| 10 to 14 years | 12,543 | 4.02% |
| 15 to 19 years | 9,276 | 2.97% |
| 20 to 24 years | 6,204 | 1.99% |
| 25 to 29 years | 9,894 | 3.17% |
| 30 to 34 years | 13,248 | 4.24% |
| 35 to 39 years | 14,845 | 4.75% |
| 40 to 44 years | 14,866 | 4.76% |
| 45 to 49 years | 13,826 | 4.43% |
| 50 to 54 years | 10,535 | 3.37% |
| 55 to 59 years | 7,738 | 2.48% |
| 60 to 64 years | 5,897 | 1.89% |
| 65 to 69 years | 4,048 | 1.30% |
| 70 to 74 years | 2,512 | 0.80% |
| 75 to 79 years | 1,938 | 0.62% |
| 80 to 84 years | 1,507 | 0.48% |
| 85 years and over | 1,518 | 0.49% |
Median Age in Loudoun County
*Base on 2010 Data
| Both | 34.80% | |
| Male | 34.50% | |
| Female | 35.00% |
Race in Loudoun County
*Base on 2010 Data
| Total | 312,311 | 100.00% |
| Population of one race | 299,736 | 95.97% |
| White | 214,471 | 68.67% |
| Black or African American | 22,710 | 7.27% |
| American Indian and Alaska Native | 914 | 0.29% |
| Asian | 46,033 | 14.74% |
| Asian Indian | 19,822 | 6.35% |
| Chinese | 4,708 | 1.51% |
| Filipino | 3,880 | 1.24% |
| Japanese | 448 | 0.14% |
| Korean | 4,386 | 1.40% |
| Vietnamese | 4,795 | 1.54% |
| Other Asian | 7,994 | 2.56% |
| Native Hawaiian and Other Pacific Islander | 184 | 0.06% |
| Native Hawaiian | 53 | 0.02% |
| Guamanian or Chamorro | 59 | 0.02% |
| Samoan | 15 | 0.00% |
| Other Pacific Islander | 57 | 0.02% |
| Some Other Race | 15,424 | 4.94% |
| Population of Two or More Races | 12,575 | 4.03% |
| White; American Indian and Alaska Native | 756 | 0.24% |
| White; Asian | 4,976 | 1.59% |
| White; Black or African American | 2,325 | 0.74% |
| White; Some Other Race | 1,818 | 0.58% |
The Population 16 Years in Loudoun County
*Base on 2010 Data
| Total | 225,751 | 100.00% |
| Male | 110,207 | 48.82% |
| Female | 115,544 | 51.18% |
The Population 18 Years in Loudoun County
*Base on 2010 Data
| Total | 216,877 | 100.00% |
| Male | 105,737 | 48.75% |
| Female | 111,140 | 51.25% |
The Population 21 Years in Loudoun County
*Base on 2010 Data
| Total | 209,094 | 100.00% |
| Male | 101,522 | 48.55% |
| Female | 107,572 | 51.45% |
The Population 62 Years in Loudoun County
*Base on 2010 Data
| Total | 27,038 | 100.00% |
| Male | 12,130 | 44.86% |
| Female | 14,908 | 55.14% |
The Population 65 Years in Loudoun County
*Base on 2010 Data
| Total | 20,425 | 100.00% |
| Male | 8,902 | 43.58% |
| Female | 11,523 | 56.42% |
Race (total races tallied) in Loudoun County
*Base on 2010 Data
| White alone or in combination with one or more other races | 225,253 | 69.14% |
| Black or African American alone or in combination with one or more other races | 26,336 | 8.08% |
| American Indian and Alaska Native alone or in combination with one or more other races | 2,589 | 0.79% |
| Asian alone or in combination with one or more other races | 52,582 | 16.14% |
| Native Hawaiian and Other Pacific Islander alone or in combination with one or more other races | 627 | 0.19% |
| Some Other Race alone or in combination with one or more other races | 18,416 | 5.65% |
Hispanic or Latino by Specific Origin in Loudoun County
*Base on 2010 Data
| Total | 312,311 | 100.00% |
| Hispanic or Latino (of any race) | 38,576 | 12.35% |
| Mexican | 5,555 | 1.78% |
| Puerto Rican | 2,926 | 0.94% |
| Cuban | 866 | 0.28% |
| Other Hispanic or Latino | 29,229 | 9.36% |
| Not Hispanic or Latino | 273,735 | 87.65% |
Hispanic or Latino and Race in Loudoun County
*Base on 2010 Data
| Total | 312,311 | 100.00% |
| Hispanic or Latino | 38,576 | 12.35% |
| White alone | 19,626 | 6.28% |
| Black or African American alone | 776 | 0.25% |
| American Indian and Alaska Native alone | 394 | 0.13% |
| Asian alone | 238 | 0.08% |
| Native Hawaiian and Other Pacific Islander alone | 41 | 0.01% |
| Some Other Race alone | 14,616 | 4.68% |
| Two or More Races | 2,885 | 0.92% |
| Not Hispanic or Latino | 273,735 | 87.65% |
| White alone | 194,845 | 62.39% |
| Black or African American alone | 21,934 | 7.02% |
| American Indian and Alaska Native alone | 520 | 0.17% |
| Asian alone | 45,795 | 14.66% |
| Native Hawaiian and Other Pacific Islander alone | 143 | 0.05% |
| Some Other Race alone | 808 | 0.26% |
| Two or More Races | 9,690 | 3.10% |
Relationship in Loudoun County
*Base on 2010 Data
| Total | 312,311 | 100.00% |
| In households | 311,139 | 99.62% |
| Householder | 104,583 | 33.49% |
| Spouse | 68,056 | 21.79% |
| Child | 107,339 | 34.37% |
| Own child under 18 years | 90,189 | 28.88% |
| Other relatives | 16,780 | 5.37% |
| Under 18 years | 4,049 | 1.30% |
| 65 years and over | 3,466 | 1.11% |
| Nonrelatives | 14,381 | 4.60% |
| Under 18 years | 993 | 0.32% |
| 65 years and over | 333 | 0.11% |
| Unmarried partner | 4,677 | 1.50% |
| In group quarters | 1,172 | 0.38% |
| Institutionalized population | 586 | 0.19% |
| Male | 296 | 0.09% |
| Female | 290 | 0.09% |
| Noninstitutionalized population | 586 | 0.19% |
| Male | 316 | 0.10% |
| Female | 270 | 0.09% |
Households by Type in Loudoun County
*Base on 2010 Data
| Subject | Number | Percent |
|---|---|---|
| Total | 104,583 | 100.00% |
| Family households (families) | 80,494 | 76.97% |
| With own children under 18 years | 48,182 | 46.07% |
| Husband-wife family | 68,056 | 65.07% |
| With own children under 18 years | 40,889 | 39.10% |
| Male householder, no wife present | 3,732 | 3.57% |
| With own children under 18 years | 1,970 | 1.88% |
| Female householder, no husband present | 8,706 | 8.32% |
| With own children under 18 years | 5,323 | 5.09% |
| Nonfamily households | 24,089 | 23.03% |
| Householder living alone | 18,659 | 17.84% |
| Male | 8,000 | 7.65% |
| 65 years and over | 1,104 | 1.06% |
| Female | 10,659 | 10.19% |
| 65 years and over | 3,528 | 3.37% |
Households with individuals under 18 years in Loudoun County
*Base on 2010 Data
| Total | 50,407 | 48.20% |
Households with individuals under 65 years in Loudoun County
*Base on 2010 Data
| Total | 15,189 | 14.52% |
Average Household Size in Loudoun County
*Base on 2010 Data
| Average household size | 3 | % |
Average Family Size in Loudoun County
*Base on 2010 Data
| Average family size | 3 | % |
Housing Occupancy(Total housing units) in Loudoun County
*Base on 2010 Data
| Total | 109,442 | 100.00% |
| Occupied housing units | 104,583 | 95.56% |
| Vacant housing units | 4,859 | 4.44% |
| For rent | 1,162 | 1.06% |
| Rented, not occupied | 95 | 0.09% |
| For sale only | 1,400 | 1.28% |
| Sold, not occupied | 367 | 0.34% |
| For seasonal, recreational, or occasional use | 665 | 0.61% |
| All other vacants | 1,170 | 1.07% |
Homeowner Vacancy Rate in Loudoun County
*Base on 2010 Data
| Homeowner vacancy rate (percent) | 1.70% |
Rental Vacancy Rate in Loudoun County
*Base on 2010 Data
| Rental vacancy rate (percent) | 4.80% |
Housing Tenure(Occupied housing units) in Loudoun County
*Base on 2010 Data
| Total | 104,583 | 100.00% |
| Owner-occupied housing units | 81,384 | 77.82% |
| Renter-occupied housing units | 23,199 | 22.18% |
Population in Occupied Housing Units by Tenure(Population in occupied housing units) in Loudoun County
*Base on 2010 Data
| Owner-occupied housing units | 248,530 | 79.88% |
| Renter-occupied housing units | 62,609 | 20.12% |
Average Household Size of Occupied Housing Units by Tenure in Loudoun County
*Base on 2010 Data
| Owner occupied | 3 | % |
| Renter occupied | 3 | % |