City in Orange County, California · 9.1 sq mi · 6,086 people per sq mi
55,205 people live in Fountain Valley. The typical household earns $115,237, and the median resident is 44.4 years old.
2026 projection
From 57,047 in 2020
Poverty rate 8.02%
Men 41.3 · Women 46.7
1960–2026
55,205
2026 projection
3.2% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1960–2026
55,205
2026 projection
3.2% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 55,205 | -303 | 0.55% |
|---|---|---|---|
| 2025 | 55,508 | -257 | 0.46% |
| 2024 | 55,765 | +53 | 0.10% |
| 2023 | 55,712 | -219 | 0.39% |
| 2022 | 55,931 | -458 | 0.81% |
| 2021 | 56,389 | -658 | 1.15% |
| 2020 | 57,047 | -61 | 0.11% |
| 2019 | 57,108 | -268 | 0.47% |
| 2018 | 57,376 | -267 | 0.46% |
| 2017 | 57,643 | -130 | 0.23% |
Showing 10 of 22 years.
The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.
Fountain Valley has a population change lower than Orange County, California, and the U.S.
Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.
Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.
Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 563 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 12 residents
50% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 50% | 51% | 49% |
| Never married | 34% | 39% | 29% |
| Divorced | 9% | 7% | 11% |
| Widowed | 6% | 3% | 9% |
| Separated | 1% | <1% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources