| Population | Portsmouth | U.S. |
|---|
| Total Population | 20,784 | 281,421,920 |
| Female | 51.4% | 50.9% |
| Male | 48.6% | 49.1% |
| 18 years and over | 82.8% | 74.3% |
| 65 years and over | 16.3% | 12.4% |
| Married Persons | 46.9% | 56.5% |
| Single Persons | 53.1% | 43.5% |
| Median Age | 38.5 | 35.3 |
| Average Family Size | 2.8 | 3.1 |
| Ethnicity |
| White | 94.8% | 77.0% |
| Black or African American | 2.2% | 12.6% |
| American Indian and Alaska Native | 0.2% | 0.9% |
| Asian | 2.5% | 3.7% |
| Native Hawaiian and Other Pacific Islander | 0.0% | 0.1% |
| Other | 0.3% | 5.6% |
| Hispanic or Latino (of any race) | 1.4% | 12.9% |
| Housing Characteristics | Portsmouth | U.S. |
|---|
| Total Housing Units | 10,183 | 115,904,640 |
| Median Home Cost | $168,600 | $119,600 |
| Number of Households | 9,875 | 105,480,104 |
| Persons per Household | 2.04 | 2.59 |
| Economic Characteristics | Portsmouth | U.S. |
|---|
| Median Household Income | $45,195 | $41,994 |
| Per Capita Income | $27,540 | $21,587 |
| In Labor Force | 69.9% | 63.9% |
| Families below poverty level | 318 | 6,620,945 |
| Education Characteristics | Portsmouth | U.S. |
|---|
| School Enrollment |
| Elementary School Enrollment | 1,553 | 33,653,640 |
| High School Enrollment | 882 | 16,380,951 |
| College or Graduate School | 1,003 | 17,483,262 |
| Educational Attainment Population 25 years and older |
| High School Graduate | 24.3% | 28.6% |
| Associates Degree | 7.3% | 6.3% |
| Bachelor's Degree | 28.0% | 15.5% |
| Graduate or Professional Degree | 13.9% | 8.9% |
Data provided by the 2000 U.S. Census
