Population by Age in Southold
*Base on 2010 Data
| Total population | 5,748 | 100.00% |
| Under 5 years | 244 | 4.24% |
| 5 to 9 years | 299 | 5.20% |
| 10 to 14 years | 366 | 6.37% |
| 15 to 19 years | 332 | 5.78% |
| 20 to 24 years | 199 | 3.46% |
| 25 to 29 years | 191 | 3.32% |
| 30 to 34 years | 187 | 3.25% |
| 35 to 39 years | 263 | 4.58% |
| 40 to 44 years | 362 | 6.30% |
| 45 to 49 years | 465 | 8.09% |
| 50 to 54 years | 461 | 8.02% |
| 55 to 59 years | 454 | 7.90% |
| 60 to 64 years | 395 | 6.87% |
| 65 to 69 years | 404 | 7.03% |
| 70 to 74 years | 371 | 6.45% |
| 75 to 79 years | 279 | 4.85% |
| 80 to 84 years | 242 | 4.21% |
| 85 years and over | 234 | 4.07% |
Male Population in Southold
*Base on 2010 Data
| Male population | 2,802 | 48.75% |
| Under 5 years | 125 | 2.17% |
| 5 to 9 years | 169 | 2.94% |
| 10 to 14 years | 198 | 3.44% |
| 15 to 19 years | 173 | 3.01% |
| 20 to 24 years | 109 | 1.90% |
| 25 to 29 years | 96 | 1.67% |
| 30 to 34 years | 96 | 1.67% |
| 35 to 39 years | 135 | 2.35% |
| 40 to 44 years | 164 | 2.85% |
| 45 to 49 years | 244 | 4.24% |
| 50 to 54 years | 198 | 3.44% |
| 55 to 59 years | 225 | 3.91% |
| 60 to 64 years | 189 | 3.29% |
| 65 to 69 years | 183 | 3.18% |
| 70 to 74 years | 169 | 2.94% |
| 75 to 79 years | 122 | 2.12% |
| 80 to 84 years | 120 | 2.09% |
| 85 years and over | 87 | 1.51% |
Female Population in Southold
*Base on 2010 Data
| Female population | 2,946 | 51.25% |
| Under 5 years | 119 | 2.07% |
| 5 to 9 years | 130 | 2.26% |
| 10 to 14 years | 168 | 2.92% |
| 15 to 19 years | 159 | 2.77% |
| 20 to 24 years | 90 | 1.57% |
| 25 to 29 years | 95 | 1.65% |
| 30 to 34 years | 91 | 1.58% |
| 35 to 39 years | 128 | 2.23% |
| 40 to 44 years | 198 | 3.44% |
| 45 to 49 years | 221 | 3.84% |
| 50 to 54 years | 263 | 4.58% |
| 55 to 59 years | 229 | 3.98% |
| 60 to 64 years | 206 | 3.58% |
| 65 to 69 years | 221 | 3.84% |
| 70 to 74 years | 202 | 3.51% |
| 75 to 79 years | 157 | 2.73% |
| 80 to 84 years | 122 | 2.12% |
| 85 years and over | 147 | 2.56% |
Median Age in Southold
*Base on 2010 Data
| Both | 49.70% | |
| Male | 47.90% | |
| Female | 51.40% |
Race in Southold
*Base on 2010 Data
| Total | 5,748 | 100.00% |
| Population of one race | 5,677 | 98.76% |
| White | 5,395 | 93.86% |
| Black or African American | 46 | 0.80% |
| American Indian and Alaska Native | 2 | 0.03% |
| Asian | 47 | 0.82% |
| Asian Indian | 7 | 0.12% |
| Chinese | 17 | 0.30% |
| Filipino | 6 | 0.10% |
| Japanese | 12 | 0.21% |
| Korean | 2 | 0.03% |
| Vietnamese | 0 | 0.00% |
| Other Asian | 3 | 0.05% |
| Native Hawaiian and Other Pacific Islander | 22 | 0.38% |
| Native Hawaiian | 0 | 0.00% |
| Guamanian or Chamorro | 22 | 0.38% |
| Samoan | 0 | 0.00% |
| Other Pacific Islander | 0 | 0.00% |
| Some Other Race | 165 | 2.87% |
| Population of Two or More Races | 71 | 1.24% |
| White; American Indian and Alaska Native | 11 | 0.19% |
| White; Asian | 22 | 0.38% |
| White; Black or African American | 14 | 0.24% |
| White; Some Other Race | 17 | 0.30% |
The Population 16 Years in Southold
*Base on 2010 Data
| Total | 4,776 | 100.00% |
| Male | 2,276 | 47.65% |
| Female | 2,500 | 52.35% |
The Population 18 Years in Southold
*Base on 2010 Data
| Total | 4,616 | 100.00% |
| Male | 2,197 | 47.60% |
| Female | 2,419 | 52.40% |
The Population 21 Years in Southold
*Base on 2010 Data
| Total | 4,460 | 100.00% |
| Male | 2,112 | 47.35% |
| Female | 2,348 | 52.65% |
The Population 62 Years in Southold
*Base on 2010 Data
| Total | 1,754 | 100.00% |
| Male | 780 | 44.47% |
| Female | 974 | 55.53% |
The Population 65 Years in Southold
*Base on 2010 Data
| Total | 1,530 | 100.00% |
| Male | 681 | 44.51% |
| Female | 849 | 55.49% |
Race (total races tallied) in Southold
*Base on 2010 Data
| White alone or in combination with one or more other races | 5,461 | 93.83% |
| Black or African American alone or in combination with one or more other races | 64 | 1.10% |
| American Indian and Alaska Native alone or in combination with one or more other races | 17 | 0.29% |
| Asian alone or in combination with one or more other races | 69 | 1.19% |
| Native Hawaiian and Other Pacific Islander alone or in combination with one or more other races | 23 | 0.40% |
| Some Other Race alone or in combination with one or more other races | 186 | 3.20% |
Hispanic or Latino by Specific Origin in Southold
*Base on 2010 Data
| Total | 5,748 | 100.00% |
| Hispanic or Latino (of any race) | 482 | 8.39% |
| Mexican | 38 | 0.66% |
| Puerto Rican | 65 | 1.13% |
| Cuban | 3 | 0.05% |
| Other Hispanic or Latino | 376 | 6.54% |
| Not Hispanic or Latino | 5,266 | 91.61% |
Hispanic or Latino and Race in Southold
*Base on 2010 Data
| Total | 5,748 | 100.00% |
| Hispanic or Latino | 482 | 8.39% |
| White alone | 272 | 4.73% |
| Black or African American alone | 3 | 0.05% |
| American Indian and Alaska Native alone | 1 | 0.02% |
| Asian alone | 0 | 0.00% |
| Native Hawaiian and Other Pacific Islander alone | 18 | 0.31% |
| Some Other Race alone | 163 | 2.84% |
| Two or More Races | 25 | 0.43% |
| Not Hispanic or Latino | 5,266 | 91.61% |
| White alone | 5,123 | 89.13% |
| Black or African American alone | 43 | 0.75% |
| American Indian and Alaska Native alone | 1 | 0.02% |
| Asian alone | 47 | 0.82% |
| Native Hawaiian and Other Pacific Islander alone | 4 | 0.07% |
| Some Other Race alone | 2 | 0.03% |
| Two or More Races | 46 | 0.80% |
Relationship in Southold
*Base on 2010 Data
| Total | 5,748 | 100.00% |
| In households | 5,714 | 99.41% |
| Householder | 2,414 | 42.00% |
| Spouse | 1,380 | 24.01% |
| Child | 1,437 | 25.00% |
| Own child under 18 years | 1,059 | 18.42% |
| Other relatives | 203 | 3.53% |
| Under 18 years | 59 | 1.03% |
| 65 years and over | 42 | 0.73% |
| Nonrelatives | 280 | 4.87% |
| Under 18 years | 13 | 0.23% |
| 65 years and over | 31 | 0.54% |
| Unmarried partner | 123 | 2.14% |
| In group quarters | 34 | 0.59% |
| Institutionalized population | 0 | 0.00% |
| Male | 0 | 0.00% |
| Female | 0 | 0.00% |
| Noninstitutionalized population | 34 | 0.59% |
| Male | 13 | 0.23% |
| Female | 21 | 0.37% |
Households by Type in Southold
*Base on 2010 Data
| Subject | Number | Percent |
|---|---|---|
| Total | 2,414 | 100.00% |
| Family households (families) | 1,644 | 68.10% |
| With own children under 18 years | 561 | 23.24% |
| Husband-wife family | 1,380 | 57.17% |
| With own children under 18 years | 442 | 18.31% |
| Male householder, no wife present | 87 | 3.60% |
| With own children under 18 years | 36 | 1.49% |
| Female householder, no husband present | 177 | 7.33% |
| With own children under 18 years | 83 | 3.44% |
| Nonfamily households | 770 | 31.90% |
| Householder living alone | 646 | 26.76% |
| Male | 228 | 9.44% |
| 65 years and over | 97 | 4.02% |
| Female | 418 | 17.32% |
| 65 years and over | 298 | 12.34% |
Households with individuals under 18 years in Southold
*Base on 2010 Data
| Total | 600 | 24.86% |
Households with individuals under 65 years in Southold
*Base on 2010 Data
| Total | 1,060 | 43.91% |
Average Household Size in Southold
*Base on 2010 Data
| Average household size | 2 | % |
Average Family Size in Southold
*Base on 2010 Data
| Average family size | 3 | % |
Housing Occupancy(Total housing units) in Southold
*Base on 2010 Data
| Total | 3,996 | 100.00% |
| Occupied housing units | 2,414 | 60.41% |
| Vacant housing units | 1,582 | 39.59% |
| For rent | 34 | 0.85% |
| Rented, not occupied | 4 | 0.10% |
| For sale only | 57 | 1.43% |
| Sold, not occupied | 16 | 0.40% |
| For seasonal, recreational, or occasional use | 1,378 | 34.48% |
| All other vacants | 93 | 2.33% |
Homeowner Vacancy Rate in Southold
*Base on 2010 Data
| Homeowner vacancy rate (percent) | 2.70% |
Rental Vacancy Rate in Southold
*Base on 2010 Data
| Rental vacancy rate (percent) | 8.00% |
Housing Tenure(Occupied housing units) in Southold
*Base on 2010 Data
| Total | 2,414 | 100.00% |
| Owner-occupied housing units | 2,028 | 84.01% |
| Renter-occupied housing units | 386 | 15.99% |
Population in Occupied Housing Units by Tenure(Population in occupied housing units) in Southold
*Base on 2010 Data
| Owner-occupied housing units | 4,725 | 82.69% |
| Renter-occupied housing units | 989 | 17.31% |
Average Household Size of Occupied Housing Units by Tenure in Southold
*Base on 2010 Data
| Owner occupied | 2 | % |
| Renter occupied | 3 | % |