Petaluma, California

Petaluma population, 2020 to 2024

Petaluma lost 356 residents from July 2020 to July 2024, a change of -0.6%. In the latest year it moved by +397. Among 429 California places of 5,000 or more, that growth ranks 193rd; the median place changed by -1.1%. The median place of 5,000+ in California has 37,056 people, so Petaluma is 1.6 times that size.

Petaluma covers 14.42 square miles of land and 0.11 of water, for 4,119 people per square mile of land. The median California place of 5,000+ has 3,725, so Petaluma is denser than the typical town.

What county Petaluma is in

All of Petaluma's residents live in Sonoma County, which had 485,375 residents in 2024. Petaluma holds 12.2% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Petaluma

2 ZIP Code Tabulation Areas (ZCTAs) overlap Petaluma by at least 10% of the ZCTA's or the city's land: 94952, 94954. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Petaluma is

The Census internal point of Petaluma is at 38.242300, -122.628800. Sacramento, the capital, is 65.6 miles ENE in a straight line. The nearest larger place is Santa Rosa, CA (177,524 people), 14.7 miles away.

Daylight in Petaluma

At 38.24° N, Petaluma gets about 14 h 50 min of daylight around the June solstice and 9 h 30 min around the December solstice, a swing of 5 h 20 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Petaluma

The eight nearest incorporated places of 1,000+ in California, measured between internal points. The closest is Cotati, 7.4 miles away, with 7,403 people.