Population 243 · Census ACS 2020–24
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Population and households in Thomas Mountain
Household size in Thomas Mountain
| Period | Thomas Mountain | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.52 | 3.35 | 3.04 | 2.68 |
| 2010–14 | 1.62 | 3.43 | 3.10 | 2.73 |
| 2015–19 | 2.41 | 3.42 | 3.09 | 2.71 |
| 2020–24 | 2.38 | 3.34 | 3.01 | 2.65 |
| Change | −0.14 | −0.01 | −0.03 | −0.03 |
Households in Thomas Mountain are small: just 2.38 people on average, compared with 2.65 nationally. That is typical of places where many people live alone or as couples, and fewer have children at home. Since 2006–10, household size has dropped from 2.52, but in a place this small, much of that may be survey noise rather than real change.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Thomas Mountain
| Period | Thomas Mountain | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 44.9 | 33.6 | 35.8 | 37.7 |
| 2010–14 | 51.1 | 34.6 | 36.8 | 38.6 |
| 2015–19 | 48.5 | 35.9 | 37.9 | 39.6 |
| 2020–24 | 64.0 | 37.0 | 39.0 | 40.1 |
| Change | +19.1 | +3.4 | +3.1 | +2.3 |
With a median age of 64.0, Thomas Mountain is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Thomas Mountain
| Period | Thomas Mountain | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.9% | 15.2% | 13.5% | 12.3% |
| 2010–14 | 5.8% | 15.7% | 13.5% | 12.3% |
| 2015–19 | 5.2% | 14.4% | 12.3% | 11.6% |
| 2020–24 | 11.2% | 14.8% | 12.3% | 11.6% |
| Change | +3.3 pts | −0.3 pts | −1.2 pts | −0.6 pts |
Single-parent households are about as common in Thomas Mountain as they are nationally: 11.2%, against 11.6%. Single parents are less common here than in the Riverside area as a whole (14.8%).
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Thomas Mountain
Renters in Thomas Mountain
| Period | Thomas Mountain | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 32.1% | 32.3% | 42.6% | 33.3% |
| 2010–14 | 35.6% | 36.6% | 45.2% | 35.6% |
| 2015–19 | 19.3% | 36.7% | 45.2% | 36.0% |
| 2020–24 | 15.9% | 34.2% | 44.1% | 34.8% |
| Change | −16.2 pts | +1.9 pts | +1.5 pts | +1.5 pts |
Thomas Mountain is largely a place of homeowners: only 15.9% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 48.3% have no mortgage at all, above the national share of 39.8%.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Thomas Mountain
| Period | Thomas Mountain | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 36.2% | 11.8% | 8.7% | 11.4% |
| 2010–14 | 48.7% | 10.9% | 8.1% | 11.4% |
| 2015–19 | 53.6% | 9.4% | 7.5% | 11.1% |
| 2020–24 | 21.6% | 7.8% | 7.3% | 9.6% |
| Change | −14.6 pts | −4.0 pts | −1.4 pts | −1.8 pts |
Vacancy is high in Thomas Mountain: 21.6% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Thomas Mountain
| Period | Thomas Mountain | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 1981 | 1983 | 1972 | 1974 |
| 2010–14 | 1979 | 1984 | 1973 | 1975 |
| 2015–19 | 1983 | 1984 | 1974 | 1977 |
| 2020–24 | 1982 | 1986 | 1976 | 1980 |
| Change | +1 | +3 | +4 | +6 |
Homes in Thomas Mountain are about the same age as the nation's housing: the median home was built in 1982, versus 1980 nationally.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Thomas Mountain
| Period | Thomas Mountain | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | $821 | $1,287 | $1,298 | $965 |
| 2010–14 | $1,018 | $1,332 | $1,379 | $1,040 |
| 2015–19 | $899 | $1,549 | $1,721 | $1,213 |
| 2020–24 | $1,519 | $2,083 | $2,229 | $1,571 |
| Change | +$698 | +$796 | +$931 | +$606 |
A typical rental in Thomas Mountain costs $1,519 a month with utilities, close to the national median of $1,571. Rents here are lower than in the Riverside area overall ($2,083). Rent takes 19.7% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Thomas Mountain
Bachelor's degrees in Thomas Mountain
| Period | Thomas Mountain | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 11.5% | 19.2% | 29.1% | 28.4% |
| 2010–14 | 17.8% | 19.4% | 30.1% | 29.6% |
| 2015–19 | 29.4% | 21.2% | 32.9% | 32.1% |
| 2020–24 | 18.3% | 24.0% | 36.3% | 35.6% |
| Change | +6.9 pts | +4.8 pts | +7.1 pts | +7.2 pts |
Fewer adults in Thomas Mountain have a four-year degree than in the country as a whole: 18.3%, against 35.6% nationally.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Thomas Mountain
| Period | Thomas Mountain | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 71.9% | 77.9% | 79.9% | 84.9% |
| 2010–14 | 88.1% | 78.6% | 80.7% | 86.1% |
| 2015–19 | 79.0% | 80.6% | 82.6% | 87.7% |
| 2020–24 | 85.6% | 82.5% | 84.2% | 89.3% |
| Change | +13.7 pts | +4.6 pts | +4.3 pts | +4.3 pts |
About one in seven adults in Thomas Mountain never finished high school, more than nationally: 85.6% have a diploma or equivalent, against 89.3% across the U.S. Still, the rate is higher than in the Riverside area overall (82.5%).
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Thomas Mountain
| Period | Thomas Mountain | Riverside area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 13.5% | 11.4% | 9.2% | 8.1% |
| 2010–14 | 31.5% | 14.4% | 11.3% | 9.4% |
| 2015–19 | 2.6% | 7.7% | 6.3% | 5.6% |
| 2020–24 | 1.7% | 6.8% | 6.6% | 5.4% |
| Change | −11.8 pts | −4.6 pts | −2.6 pts | −2.7 pts |
The job market in Thomas Mountain has been strong: just 1.7% of the labor force was out of work and looking, well below the national rate of 5.4%. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Thomas Mountain compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Thomas Mountain | 2.38 | 64.0 | 11.2% | 15.9% | 21.6% | 1982 | $1,519 | 18.3% | 85.6% | 1.7% |
| Mountain Center | 2.57 | 49.2 | 20.8% | 11.0% | 32.2% | 1986 | $1,561 | 33.8% | 89.5% | 6.0% |
| Idyllwild | 2.77 | 39.1 | 24.4% | 11.4% | 34.9% | 1987 | $1,495 | 34.0% | 90.4% | 8.1% |
| Anza | 2.96 | 39.1 | 12.3% | 20.5% | 31.8% | 1984 | $1,356 | 16.1% | 84.3% | 9.3% |
| Fern Valley | 1.71 | 53.7 | 18.6% | 29.2% | 61.0% | 1971 | $1,744 | 68.6% | 95.0% | 8.2% |
| Cahuilla | 4.55 | 40.6 | 6.4% | 18.7% | 27.4% | 1990 | $1,647 | 15.7% | 78.0% | 2.8% |
| Pinyon Pines | 2.83 | 38.7 | 17.2% | 15.9% | 28.6% | 1990 | $1,333 | 23.9% | 79.4% | 13.6% |
| Holcomb Village | 2.77 | 47.5 | 9.5% | 9.3% | 28.6% | 1991 | $954 | 16.4% | 90.5% | 9.4% |
| Aguanga | 2.87 | 46.5 | 8.1% | 8.4% | 22.0% | 1994 | $1,039 | 24.9% | 90.0% | 8.9% |
| Sage | 3.09 | 46.8 | 10.4% | 9.1% | 12.0% | 1994 | $1,699 | 28.6% | 95.1% | 3.7% |
| Radec | 2.67 | 57.4 | 8.9% | 13.1% | 14.3% | 1993 | $1,329 | 29.1% | 94.8% | 4.3% |
All figures 2020–24.
Cities with similar populations: Eliza, LA · Eudora, MO · Erin, WV · Ensenada, NM · English, TX · Endicott, WV · Endee, KY · Enchanted Hills, IN · Elvira, IL · Elmfield, LA
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Thomas Mountain. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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