Rocklin population
Rocklin, California had an estimated 76,821 residents on July 1, 2025, the 514th-largest city in the US. That is up 34.8% since the 2010 Census and up 110.5% since 2000.
- Population, July 2025
- 76,821+7.3% since April 2020
- People per sq mile
- 3,87219.8 sq mi of land
- Median age
- 38.414.3% are 65 or older
- Households with kids
- 38.7%with anyone under 18
Population by year, 2000 to 2025
| Year | Population | Change | Basis |
|---|---|---|---|
| 2025 | 76,821 | +1,387 | Estimate, July 1 |
| 2024 | 75,434 | +1,491 | Estimate, July 1 |
| 2023 | 73,943 | +698 | Estimate, July 1 |
| 2022 | 73,245 | +448 | Estimate, July 1 |
| 2021 | 72,797 | +1,188 | Estimate, July 1 |
| 2020 | 71,609 | +2,135 | April 2020 estimates base |
| 2019 | 69,474 | +1,818 | Estimate, July 1 |
| 2018 | 67,656 | +2,537 | Estimate, July 1 |
| 2017 | 65,119 | +2,206 | Estimate, July 1 |
| 2016 | 62,913 | +1,746 | Estimate, July 1 |
| 2015 | 61,167 | +782 | Estimate, July 1 |
| 2014 | 60,385 | +556 | Estimate, July 1 |
| 2013 | 59,829 | +648 | Estimate, July 1 |
| 2012 | 59,181 | +519 | Estimate, July 1 |
| 2011 | 58,662 | +1,688 | Estimate, July 1 |
| 2010 | 56,974 | +1,066 | 2010 Census (April 1) |
| 2009 | 55,908 | +1,441 | Estimate, July 1 |
| 2008 | 54,467 | +1,819 | Estimate, July 1 |
| 2007 | 52,648 | +1,593 | Estimate, July 1 |
| 2006 | 51,055 | +1,930 | Estimate, July 1 |
| 2005 | 49,125 | +2,050 | Estimate, July 1 |
| 2004 | 47,075 | +2,391 | Estimate, July 1 |
| 2003 | 44,684 | +2,645 | Estimate, July 1 |
| 2002 | 42,039 | +2,552 | Estimate, July 1 |
| 2001 | 39,487 | +2,988 | Estimate, July 1 |
| 2000 | 36,499 | April 2000 estimates base |
Year-to-year changes across 2010 and 2020 mix census counts with estimates, so small jumps at those years are partly method changes.
Frequently asked questions
What is the population of Rocklin in 2025?
The Census Bureau estimates Rocklin had 76,821 residents on July 1, 2025, making it the 514th-largest city in the US.
Is Rocklin growing?
Yes. Rocklin has grown 34.8% since the 2010 Census (56,974 people), and grown 7.3% since 2020.
What was the population of Rocklin in 2000?
About 36,499 (the Census Bureau's April 2000 estimates base). By the 2010 Census it was 56,974.
How dense is Rocklin?
Rocklin has about 3,872 people per square mile of land (19.8 square miles).
More about Rocklin
See cost of living, jobs and commutes in Rocklin, Rocklin weather by month, or every Rocklin ZIP code. For the biggest cities in the country, see the largest US cities.