Yuba County area

Population and density of Yuba County

The Census Bureau estimates that 88,691 people lived in Yuba County on July 1, 2025. That ranks #681 of 3,222 county equivalents nationally and #38 of 58 in California. Since the April 1, 2020 estimates base of 81,573, the population has grown by 7,118 (+8.7%), compared with −0.5% for California as a whole.

With 632 square miles of land, that is 140 people per square mile (54 per km²), placing Yuba County #808 nationally for density and #25 in California. The median county equivalent has 47 people per square mile; the California median is 112. Put another way, there are about 4.6 acres of land per resident.

U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.

Cities and towns in Yuba County

2 incorporated places lie at least partly in Yuba County. Together they are home to 17,005 people (19.2%); the other 71,686 (80.8%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Marysville city, with 12,738 residents in the county. By land, Wheatland city is the largest at 8.122 mi². Among places with at least 1,000 residents in 2020, Wheatland city grew fastest since then (+14.9%).

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Yuba County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Yuba County is a central county of the Yuba City, CA Metropolitan Statistical Area. Its 2 county equivalents have 187,478 residents on 1,234.7 square miles of land; Yuba County accounts for 51.2% of the land and 47.3% of the residents. By combined land it ranks #253 of 393 metropolitan areas, and #246 by population. It belongs to the Sacramento-Roseville, CA Combined Statistical Area.

ZIP codes

18 ZIP Code Tabulation Areas have land in Yuba County; 12 of them have most of their land inside the county, and the others mainly cover neighboring areas.

956929590195903959149591895919959229592595930959359594195960959619596295966959729597795981

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Yuba County

Yuba County shares a land border with 6 county equivalents. It has more land than 1 of them. The largest neighbor is Plumas County (2,553.1 mi²) and the smallest is Sutter County (602.7 mi²). Together with its neighbors, Yuba County forms a block of 8,742.6 mi² of land, of which it holds 7.2%.

How big is Yuba County compared with U.S. states?

Yuba County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.6 times as much. California’s county land could hold about 247 areas the size of Yuba County.

Another way to picture it: the same land area would fill a square about 25.1 miles (40.5 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.

State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.

What stands out about Yuba County?

Yuba County has more land than 1,707 of the other 3,221 county equivalents in the dataset.

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places Yuba County at #1,595 nationally by total area, 80 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.

Its water share is 1.9%, compared with a national county-equivalent median of 1.2% — 0.7 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside Yuba County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.