Penn Valley first appeared as a
census designated place in the
1980 United States census. The census reported that 1,574 people (98.8% of the population) lived in households, 19 (1.2%) lived in non-institutionalized group quarters, and no one was institutionalized.
2010 census The
2010 United States census reported that Penn Valley had a population of 1,621. The population density was . The racial makeup of Penn Valley was 1,434 (88.5%)
White, 9 (0.6%)
African American, 34 (2.1%)
Native American, 23 (1.4%)
Asian, 0 (0.0%)
Pacific Islander, 31 (1.9%) from
other races, and 90 (5.6%) from two or more races.
Hispanic or
Latino of any race were 143 persons (8.8%). The Census reported that 1,611 people (99.4% of the population) lived in households, 10 (0.6%) lived in non-institutionalized group quarters, and 0 (0%) were institutionalized. There were 628 households, out of which 195 (31.1%) had children under the age of 18 living in them, 301 (47.9%) were
opposite-sex married couples living together, 91 (14.5%) had a female householder with no husband present, 41 (6.5%) had a male householder with no wife present. There were 36 (5.7%)
unmarried opposite-sex partnerships, and 3 (0.5%)
same-sex married couples or partnerships. 163 households (26.0%) were made up of individuals, and 74 (11.8%) had someone living alone who was 65 years of age or older. The average household size was 2.57. There were 433
families (68.9% of all households); the average family size was 3.02. The population was spread out, with 363 people (22.4%) under the age of 18, 136 people (8.4%) aged 18 to 24, 321 people (19.8%) aged 25 to 44, 506 people (31.2%) aged 45 to 64, and 295 people (18.2%) who were 65 years of age or older. The median age was 44.5 years. For every 100 females, there were 93.7 males. For every 100 females age 18 and over, there were 89.2 males. There were 666 housing units at an average density of , of which 485 (77.2%) were owner-occupied, and 143 (22.8%) were occupied by renters. The homeowner vacancy rate was 2.6%; the rental vacancy rate was 3.3%. 1,186 people (73.2% of the population) lived in owner-occupied housing units and 425 people (26.2%) lived in rental housing units. ==Politics==