Population 15,860 · Census ACS 2020–24
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Population and households in Trinity County
Household size in Trinity County
| Period | Trinity County | California | U.S. |
|---|---|---|---|
| 2006–10 | 2.17 | 3.04 | 2.68 |
| 2010–14 | 2.35 | 3.10 | 2.73 |
| 2015–19 | 2.05 | 3.09 | 2.71 |
| 2020–24 | 2.74 | 3.01 | 2.65 |
| Change | +0.57 | −0.03 | −0.03 |
The typical household in Trinity County holds 2.74 people, slightly more than the U.S. average of 2.65. Even so, the typical household here is smaller than in California as a whole, where it has 3.01 people. Since 2006–10, household size has climbed from 2.17, even as the national average fell.
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 Trinity County
| Period | Trinity County | California | U.S. |
|---|---|---|---|
| 2006–10 | 45.8 | 35.8 | 37.7 |
| 2010–14 | 48.3 | 36.8 | 38.6 |
| 2015–19 | 53.1 | 37.9 | 39.6 |
| 2020–24 | 54.5 | 39.0 | 40.1 |
| Change | +8.7 | +3.1 | +2.3 |
With a median age of 54.5, Trinity County is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees. The median age has climbed from 45.8 in 2006–10, a much bigger shift than nationally. Only one other California county is older.
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 Trinity County
| Period | Trinity County | California | U.S. |
|---|---|---|---|
| 2006–10 | 11.5% | 13.5% | 12.3% |
| 2010–14 | 8.0% | 13.5% | 12.3% |
| 2015–19 | 12.9% | 12.3% | 11.6% |
| 2020–24 | 8.5% | 12.3% | 11.6% |
| Change | −3.0 pts | −1.2 pts | −0.6 pts |
Single parents head only 8.5% of households in Trinity County, well below the national share of 11.6%. The single-parent share is down 3.0 points from 2006–10, a much bigger shift than nationally.
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 Trinity County
Renters in Trinity County
| Period | Trinity County | California | U.S. |
|---|---|---|---|
| 2006–10 | 26.5% | 42.6% | 33.3% |
| 2010–14 | 29.5% | 45.2% | 35.6% |
| 2015–19 | 31.1% | 45.2% | 36.0% |
| 2020–24 | 28.3% | 44.1% | 34.8% |
| Change | +1.8 pts | +1.5 pts | +1.5 pts |
Most households in Trinity County own their homes; 28.3% rent, below the national share of 34.8%. Among homeowners, 64.6% have no mortgage at all, well above the national share of 39.8%. Renting is most common in the center and least common in the northeast. Since 2006–10, the renter share has risen 1.8 points, as it has nationally.
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 Trinity County
| Period | Trinity County | California | U.S. |
|---|---|---|---|
| 2006–10 | 25.6% | 8.7% | 11.4% |
| 2010–14 | 35.5% | 8.1% | 11.4% |
| 2015–19 | 30.5% | 7.5% | 11.1% |
| 2020–24 | 26.1% | 7.3% | 9.6% |
| Change | +0.4 pts | −1.4 pts | −1.8 pts |
Vacancy is high in Trinity County: 26.1% 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. Only five of California's 58 counties have a higher vacancy rate.
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 Trinity County
| Period | Trinity County | California | U.S. |
|---|---|---|---|
| 2006–10 | 1975 | 1972 | 1974 |
| 2010–14 | 1976 | 1973 | 1975 |
| 2015–19 | 1980 | 1974 | 1977 |
| 2020–24 | 1975 | 1976 | 1980 |
| Change | −0 | +4 | +6 |
Homes in Trinity County run a bit older than the national norm, with a median build year of 1975 against 1980. Newer construction is concentrated in the southwest, while the northeast has the oldest housing. Trinity County has older homes than the great majority of California counties.
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 Trinity County
| Period | Trinity County | California | U.S. |
|---|---|---|---|
| 2006–10 | $751 | $1,298 | $965 |
| 2010–14 | $772 | $1,379 | $1,040 |
| 2015–19 | $754 | $1,721 | $1,213 |
| 2020–24 | $1,019 | $2,229 | $1,571 |
| Change | +$268 | +$931 | +$606 |
A typical rental in Trinity County costs $1,019 a month with utilities, well below the national median of $1,571. Rents are up $268 a month from 2006–10, a 36% rise, a slower climb than the nation's. The typical renter here spends 23.8% of household income on rent, comfortably under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally. Only one other California county has lower rents.
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 Trinity County
Bachelor's degrees in Trinity County
| Period | Trinity County | California | U.S. |
|---|---|---|---|
| 2006–10 | 17.3% | 29.1% | 28.4% |
| 2010–14 | 18.3% | 30.1% | 29.6% |
| 2015–19 | 19.5% | 32.9% | 32.1% |
| 2020–24 | 25.9% | 36.3% | 35.6% |
| Change | +8.6 pts | +7.1 pts | +7.2 pts |
Just over a quarter of adults 25 and older in Trinity County (25.9%) have a bachelor's degree or higher, below the national share of 35.6%. Since 2006–10, the share with a degree has risen 8.6 points, in line with the national trend.
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 Trinity County
| Period | Trinity County | California | U.S. |
|---|---|---|---|
| 2006–10 | 89.9% | 79.9% | 84.9% |
| 2010–14 | 90.6% | 80.7% | 86.1% |
| 2015–19 | 92.5% | 82.6% | 87.7% |
| 2020–24 | 91.6% | 84.2% | 89.3% |
| Change | +1.6 pts | +4.3 pts | +4.3 pts |
About nine in ten adults in Trinity County have finished high school (91.6%), a bit above the national rate of 89.3%. Since 2006–10, the share with a diploma has risen 1.6 points, in line with the national trend.
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 Trinity County
| Period | Trinity County | California | U.S. |
|---|---|---|---|
| 2006–10 | 15.5% | 9.2% | 8.1% |
| 2010–14 | 12.5% | 11.3% | 9.4% |
| 2015–19 | 7.5% | 6.3% | 5.6% |
| 2020–24 | 7.0% | 6.6% | 5.4% |
| Change | −8.6 pts | −2.6 pts | −2.7 pts |
Unemployment runs high in Trinity County: 7.0% of the labor force was out of work and looking, against 5.4% nationally. Unemployment is down 8.6 points from 2006–10, a much bigger shift than nationally. 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).
Trinity County compared with nearby counties
| County | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Trinity County | 2.74 | 54.5 | 8.5% | 28.3% | 26.1% | 1975 | $1,019 | 25.9% | 91.6% | 7.0% |
| Shasta County | 2.57 | 42.7 | 11.3% | 34.4% | 10.5% | 1982 | $1,473 | 23.5% | 91.9% | 6.4% |
| Humboldt County | 2.42 | 40.7 | 11.6% | 43.5% | 12.6% | 1972 | $1,429 | 33.0% | 91.5% | 8.8% |
| Tooele County | 3.41 | 32.8 | 12.5% | 18.2% | 4.7% | 1997 | $1,411 | 23.9% | 92.2% | 3.6% |
| Salt Lake County | 2.92 | 34.9 | 10.1% | 33.9% | 6.2% | 1987 | $1,821 | 38.8% | 91.6% | 3.8% |
| Summit County | 2.78 | 41.7 | 7.7% | 19.8% | 24.8% | 1994 | $2,448 | 59.6% | 95.5% | 2.1% |
| Wasatch County | 2.88 | 36.4 | 7.8% | 19.7% | 14.8% | 2002 | $2,091 | 51.0% | 94.5% | 1.9% |
| Moffat County | 2.48 | 41.1 | 13.7% | 30.6% | 14.1% | 1977 | $1,122 | 19.5% | 90.5% | 5.6% |
| Jackson County | 2.05 | 52.3 | 8.7% | 28.9% | 36.0% | 1980 | $1,700 | 31.1% | 91.5% | 8.8% |
| Larimer County | 2.39 | 39.1 | 7.3% | 36.0% | 7.1% | 1994 | $1,882 | 55.2% | 96.7% | 4.3% |
| Logan County | 2.38 | 39.9 | 8.6% | 33.7% | 6.6% | 1963 | $1,019 | 19.0% | 88.4% | 4.5% |
All figures 2020–24.
Counties with similar populations: Poinsett County, AR · Lyon County, MN · Macon County, TN · Pickens County, AL · Pierce County, GA · Pike County, GA · Pike County, IL · Pike County, MO · Piscataquis County, ME · Plaquemines Parish, 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 Trinity County. 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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