CDP
Rio Oso
Rio Oso is a community name the Census tracks. It helps you name the place, but it usually is not city hall. Start with the county layer unless an official local district says otherwise.
Starting point
Start with the county unless an official district says otherwise.
A Census-designated place is a useful local name, but it usually does not have its own city hall. For permits, records, taxes, courts, and many services, begin with the county layer.
Special districts, utilities, schools, fire agencies, parks, water agencies, coastal rules, and state maps can still control a specific issue.
2025 population
Not available
Land area
6.5 sq mi
Water area
0 sq mi
Directory notes
Local layers to keep on the same page.
Treat this as a community name.
A CDP can be real and useful on the ground, but it normally does not mean there is a city hall for permits, rent rules, business licenses, or local code.
Start with the county.
Sutter County is the county layer shown in the Census place-county reference data.
Watch for districts.
Water, sewer, fire, school, parks, utilities, coast, wildfire, and special taxes can still belong to a district or state agency.
County layer
County shown for Rio Oso
Practical notes
Office, map, permit, and paperwork notes for Rio Oso
County layer · History and culture · Reviewed July 6, 2026
Yuba City sits between river land, farm country, and the Sutter Buttes
Yuba City's setting near the Feather River, the Sutter Buttes, downtown, and the Yuba-Sutter farm region gives the city more texture than a quick Sacramento Valley map label.
County layer · Home and property · Reviewed July 6, 2026
Yuba City water rules are lighter now, but waste still counts
Yuba City lifted mandatory water restrictions in 2023, but water waste is still prohibited and some conservation rebates are available for city water customers.
County layer · Home and property · Reviewed July 5, 2026
Yuba City yc311 is for non-emergency city requests
Yuba City's yc311 system lets residents send non-emergency service requests such as potholes, streetlights, drainage, water waste, and abandoned carts.
County layer · Home and property · Reviewed July 4, 2026
Yuba City's Permit Planner can sort a project before you apply
Yuba City offers a Permit Planner for zoning, permitting, license needs, and fee estimates before a building permit or business license question gets too far along.
County layer · Home and property · Reviewed June 30, 2026
Yuba City map questions start with levee basics
Yuba City and Sutter County provide official map, levee, stream-gauge, insurance, and emergency information for readers who need the right first stops.
Almanac notes
Stories and local context near Rio Oso
County layer · History and culture
Yuba City's Sikh Parade is part of its Valley identity
Yuba City's annual Sikh Parade grew from a local community tradition into one of the largest Sikh gatherings outside India, adding a major cultural layer to the Sacramento Valley city.
County layer · History and culture
Live Oak grew from a rail stop, a store, and a few early houses
Live Oak's early Sutter County story runs through A. M. McGrew's first home, the California and Oregon Railroad, and a small town center by the 1870s.
County layer · Outdoors
Live Oak Park gives Sutter County a Feather River day-use anchor
Live Oak Park and Recreation Area in Sutter County has Feather River day use, a boat launch, camping stalls, picnic space, basic rules, and county-run hours to check.