Population 506 · Census ACS 2020–24
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Population and households in Neptune
Household size in Neptune
| Period | Neptune | Nashville area | Tennessee | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.60 | 2.57 | 2.53 | 2.68 |
| 2010–14 | 2.78 | 2.63 | 2.57 | 2.73 |
| 2015–19 | 2.85 | 2.64 | 2.57 | 2.71 |
| 2020–24 | 2.36 | 2.56 | 2.53 | 2.65 |
| Change | −0.24 | −0.01 | +0.00 | −0.03 |
Households in Neptune are small: just 2.36 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. Household size has dropped from 2.60 in 2006–10, 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 Neptune
| Period | Neptune | Nashville area | Tennessee | U.S. |
|---|---|---|---|---|
| 2006–10 | 36.6 | 36.6 | 38.3 | 37.7 |
| 2010–14 | 37.2 | 37.3 | 39.2 | 38.6 |
| 2015–19 | 38.1 | 37.9 | 39.9 | 39.6 |
| 2020–24 | 43.2 | 38.0 | 39.9 | 40.1 |
| Change | +6.6 | +1.5 | +1.6 | +2.3 |
Neptune skews older than the country: its median age is 43.2, against 40.1 nationally.
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 Neptune
| Period | Neptune | Nashville area | Tennessee | U.S. |
|---|---|---|---|---|
| 2006–10 | 26.6% | 11.7% | 12.2% | 12.3% |
| 2010–14 | 19.6% | 11.6% | 12.0% | 12.3% |
| 2015–19 | 10.5% | 10.7% | 11.6% | 11.6% |
| 2020–24 | 25.3% | 10.7% | 11.8% | 11.6% |
| Change | −1.3 pts | −1.0 pts | −0.4 pts | −0.6 pts |
Single-parent households are common in Neptune: 25.3% of all households, against 11.6% 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 Neptune
Renters in Neptune
| Period | Neptune | Nashville area | Tennessee | U.S. |
|---|---|---|---|---|
| 2006–10 | 25.4% | 31.5% | 30.4% | 33.3% |
| 2010–14 | 21.3% | 34.2% | 32.9% | 35.6% |
| 2015–19 | 15.5% | 34.2% | 33.7% | 36.0% |
| 2020–24 | 10.0% | 34.8% | 33.1% | 34.8% |
| Change | −15.4 pts | +3.3 pts | +2.6 pts | +1.5 pts |
Neptune is overwhelmingly a place of homeowners: only 10.0% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 43.9% 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 Neptune
| Period | Neptune | Nashville area | Tennessee | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.6% | 9.1% | 11.5% | 11.4% |
| 2010–14 | 7.3% | 8.8% | 11.8% | 11.4% |
| 2015–19 | 6.6% | 8.5% | 11.8% | 11.1% |
| 2020–24 | 14.0% | 8.2% | 10.1% | 9.6% |
| Change | +8.4 pts | −0.9 pts | −1.4 pts | −1.8 pts |
Vacancy is high in Neptune: 14.0% 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 Neptune
| Period | Neptune | Nashville area | Tennessee | U.S. |
|---|---|---|---|---|
| 2006–10 | 1978 | 1984 | 1981 | 1974 |
| 2010–14 | 1986 | 1985 | 1982 | 1975 |
| 2015–19 | 1978 | 1988 | 1983 | 1977 |
| 2020–24 | 1993 | 1992 | 1986 | 1980 |
| Change | +15 | +9 | +6 | +6 |
Much of the housing in Neptune is relatively new: half of its homes were built after 1993, compared with 1980 for the U.S. as a whole. That is in line with the rest of the Nashville area.
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 Neptune
| Period | Neptune | Nashville area | Tennessee | U.S. |
|---|---|---|---|---|
| 2006–10 | $751 | $905 | $761 | $965 |
| 2010–14 | $784 | $986 | $837 | $1,040 |
| 2015–19 | $1,086 | $1,212 | $961 | $1,213 |
| 2020–24 | $1,050 | $1,653 | $1,286 | $1,571 |
| Change | +$299 | +$749 | +$526 | +$606 |
A typical rental in Neptune costs $1,050 a month with utilities, well below the national median of $1,571. The typical renter here spends 17.6% of household income on rent, comfortably under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally.
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 Neptune
Bachelor's degrees in Neptune
| Period | Neptune | Nashville area | Tennessee | U.S. |
|---|---|---|---|---|
| 2006–10 | 11.6% | 30.1% | 23.9% | 28.4% |
| 2010–14 | 9.2% | 32.0% | 25.3% | 29.6% |
| 2015–19 | 20.3% | 36.3% | 27.9% | 32.1% |
| 2020–24 | 30.4% | 41.0% | 31.4% | 35.6% |
| Change | +18.8 pts | +10.9 pts | +7.5 pts | +7.2 pts |
College degrees are a little less common in Neptune than nationally: 30.4% of adults 25 and older have a bachelor's or higher, against 35.6%.
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 Neptune
| Period | Neptune | Nashville area | Tennessee | U.S. |
|---|---|---|---|---|
| 2006–10 | 73.5% | 86.5% | 83.3% | 84.9% |
| 2010–14 | 82.0% | 88.0% | 85.4% | 86.1% |
| 2015–19 | 89.6% | 90.0% | 87.6% | 87.7% |
| 2020–24 | 89.1% | 91.7% | 89.9% | 89.3% |
| Change | +15.6 pts | +5.1 pts | +6.6 pts | +4.3 pts |
About as many adults in Neptune have finished high school as nationally: 89.1%, against 89.3%. The rate is lower than in the Nashville area as a whole (91.7%).
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 Neptune
| Period | Neptune | Nashville area | Tennessee | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.7% | 7.2% | 8.6% | 8.1% |
| 2010–14 | 10.0% | 7.8% | 9.6% | 9.4% |
| 2015–19 | 8.5% | 3.9% | 5.4% | 5.6% |
| 2020–24 | 4.5% | 3.6% | 4.8% | 5.4% |
| Change | −3.3 pts | −3.6 pts | −3.8 pts | −2.7 pts |
Unemployment in Neptune runs below the national rate: 4.5% of the labor force was out of work and looking, against 5.4% nationally. Locally, though, the rate is higher than in the wider Nashville area (3.6%). Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's 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).
Neptune 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Neptune | 2.36 | 43.2 | 25.3% | 10.0% | 14.0% | 1993 | $1,050 | 30.4% | 89.1% | 4.5% |
| Fox Bluff | 2.94 | 42.5 | 12.7% | 8.7% | 6.8% | 1992 | $1,088 | 14.0% | 89.1% | 3.8% |
| Cheap Hill | 2.85 | 40.3 | 20.8% | 10.7% | 8.8% | 1995 | $1,199 | 20.2% | 87.4% | 4.2% |
| Henrietta | 2.80 | 38.8 | 23.5% | 8.1% | 5.6% | 1984 | $1,472 | 22.0% | 92.0% | 1.0% |
| Chapmansboro | 2.70 | 40.6 | 13.0% | 17.7% | 7.1% | 1994 | $1,110 | 26.0% | 90.5% | 3.9% |
| Southside | 3.00 | 37.5 | 18.4% | 21.9% | 6.9% | 1994 | $923 | 22.5% | 91.3% | 7.1% |
| Lockertsville | 2.62 | 43.3 | 3.3% | 22.0% | 6.8% | 1993 | $1,839 | 23.5% | 86.7% | 3.4% |
| Stayton | 2.46 | 41.8 | 9.1% | 20.3% | 17.8% | 1990 | $892 | 21.4% | 87.8% | 4.1% |
| Petway | 2.71 | 42.1 | 6.7% | 13.4% | 5.0% | 1989 | $1,293 | 20.6% | 90.3% | 3.0% |
| Ashland City | 2.47 | 41.4 | 7.9% | 24.7% | 10.5% | 1995 | $1,492 | 23.6% | 88.1% | 3.2% |
| Liverwort | 3.05 | 36.8 | 18.2% | 23.8% | 6.4% | 1994 | $918 | 22.2% | 91.4% | 7.2% |
All figures 2020–24.
Cities with similar populations: Stockwell, IN · Dairyville, CA · Daisy, KY · Dalby Springs, TX · Dale, NY · Dalies, NM · Dante, SD · Dayton, MT · Dee, OR · Deer River, NY
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 Neptune. 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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