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California County
Sierra County, California
California's third-least populous county and the world capital of downhill mountain biking - from Downieville's remarkable preservation as the most authentic Gold Rush mining town in California (the entire downtown is effectively a living museum of 1850s architecture in near-original condition, accessible only by a twisting mountain road) to the Downieville Downhill (one of the most celebrated downhill mountain bike trails in the world - a 17-mile descent of 4,200 vertical feet on rugged Sierra Nevada singletrack that has made Downieville a global mountain biking pilgrimage destination) and the North Yuba River's world-class trout fishing.
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Office: Sierra County OES – (530) 289-3201 | sierracounty.ca.gov
Alert System: Sierra County Alert; CA Alert; NOAA Weather Radio
Shelter Info: Downieville community facilities; Loyalton; contact OES
FEMA Region: Region 9
Notes: Northern Sierra Nevada county; Downieville is county seat; one of California’s smallest population counties (~3,000 residents); wildfire risk (extreme – surrounding Sierra Nevada forests); severe winter weather (significant snowfall); North Yuba River; Tahoe National Forest covers most of the county; earthquake risk; very limited emergency resources – one of California’s most resource-constrained counties
Roads & Utilities
ROADS & TRANSPORTATION
County Roads: Sierra County Public Works – (530) 289-3201
Notes: SR-49 (Gold Rush highway) runs through Downieville and Sierra City; SR-89 connects to Truckee; SR-70 (Feather River Canyon – scenic but challenging) runs through the lower county; very remote mountain county; Reno and Sacramento are the nearest significant centers; mountain terrain and seasonal snow closures create periodic isolation; the county is among California’s most geographically isolated
Business & Permits
BUILDING & PERMITS
Office: Sierra County Planning – (530) 289-3201
Services: Very basic county permits; Loyalton has separate permits
Notes: Very limited development; mostly recreational cabin construction; timber industry structures; Tahoe National Forest borders limit development; very low density
Veterans Services
VETERANS SERVICES
Office: Sierra County Veterans Services – (530) 289-3201
VA Medical: VA Reno, NV – most accessible; Sacramento VA (very distant)
Services: Very basic benefits claims assistance; extremely limited local resources
Notes: Extremely remote county; VA access requires significant travel; Reno VA is accessible for eastern Sierra County residents; very small county population
Libraries
LIBRARIES
System: Sierra County Library – (530) 289-3262 | sierracounty.ca.gov
Branches: Downieville, Loyalton, Sierra City, Sierraville
Services: Books, public computers, Wi-Fi, children’s programs; Gold Rush heritage materials; mountain community resources
Notes: Small library system serving one of California’s most remote and smallest counties; the Downieville branch serves the historic county seat; all branches are important internet access points in an area with very limited broadband connectivity; Gold Rush heritage (Downieville was a major Gold Rush community – famous as the site of the only lynching of a woman in Gold Rush California, Juanita in 1851)
Parks & Recreation
PARKS & RECREATION
Key Assets: North Yuba River (excellent trout fishing; kayaking; swimming in the Downieville and Sierra City area – crystal clear mountain water); Downieville (charming Gold Rush-era mountain town at the confluence of the North Yuba and Downie Rivers; Victorian architecture; famous mountain bike trail network – Downieville Classic race is one of the most celebrated downhill mountain bike races in the world; the Downieville Downhill trail is internationally famous); Tahoe National Forest (surrounding most of the county; outstanding hiking, hunting, fishing, cross-country skiing); Loyalton (ranching community in Sierra Valley – one of the highest mountain valleys in California; sandhill crane migration); Gold Lake Highway (Graeagle area, southern Sierra County – numerous small mountain lakes; outstanding fishing; Salmon Lake, Gold Lake, Sardine Lake); Mt. Elwell
Notes: Downieville has an extraordinary reputation in the mountain biking world far disproportionate to its tiny size (~300 permanent residents) – the Downieville Downhill trail is considered one of the finest natural terrain mountain bike descents in North America; the Downieville Classic race draws elite riders from around the world; the town’s Gold Rush character (1850s stone and brick buildings, the Crabtree’s Saloon, the sheriff’s office) is beautifully preserved; the North Yuba River’s clarity and the surrounding Sierra Nevada landscape are breathtaking; Sierra Valley’s open meadows and sandhill crane migration are spectacular
GIS & Maps
GIS & MAPS
GIS Portal: Very limited; California GIS; USGS topographic maps (essential); Tahoe National Forest USFS maps
Notes: Very small county with minimal GIS infrastructure; USFS Tahoe NF maintains the primary maps for the county’s extensive national forest land; USGS topo maps essential for backcountry navigation; mountain bike trail maps through Downieville mountain bike community organizations
Animal Services
ANIMAL SERVICES
Shelter: Sierra County Animal Control – (530) 289-3201
Services: Very basic animal control; wildlife management through CDFW
Notes: Extremely remote county; minimal formal animal shelter; wildlife (black bears, mountain lions, deer, brown trout, mule deer, sandhill cranes in Sierra Valley) managed through CDFW; livestock ranching (cattle) in Sierra Valley; Tahoe NF wildlife management
Environmental & Waste
ENVIRONMENTAL / WASTE MANAGEMENT
Solid Waste: Sierra County Public Works – (530) 289-3201; Loyalton facility
Environmental: California SWRCB; Lahontan RWQCB; USFS (Tahoe National Forest – dominant land manager); North Yuba River watershed; abandoned gold mining sites (hydraulic mining debris and hard rock mine legacy contamination); Sierra County is part of the North Yuba River watershed management area
Notes: Sierra County’s environmental management is dominated by the Tahoe National Forest; North Yuba River watershed protection is critical – the river’s water quality affects downstream communities and eventually flows into the Sacramento River; Gold Rush-era hydraulic mining debris (vast quantities of sediment deposited by the North Bloomfield Gravel Company and others, whose operations were banned by the 1884 Sawyer Decision) remains in the river system and contributes to seasonal turbidity; abandoned hard rock gold and silver mines have legacy contamination in some creek drainages; the county’s extremely low population means very limited industrial environmental concerns but also very limited environmental management capacity; wildfire management in the surrounding Tahoe National Forest is critical – the North Yuba River canyon terrain creates extremely challenging fire conditions
About Sierra County
Sierra County is one of California’s smallest and most remote counties – a rugged northern Sierra Nevada community of fewer than 3,200 residents where Gold Rush heritage and extreme mountain recreation define a community that draws far more visitors than permanent residents.
Downieville (the county seat, population ~300) is arguably the most perfectly preserved Gold Rush mining town in California – the entire downtown, sitting at the confluence of the Downieville Fork and North Yuba River in a dramatic mountain canyon, retains its 1850s character with virtually no modern intrusions. The county courthouse (1854), the gallows (the only place in California where a woman was publicly hanged – Juanita, a Mexican woman, in 1851), and the Mountain Messenger (established 1853, the oldest continuously published weekly newspaper in California) define a community of extraordinary historical authenticity.
The Downieville Downhill – a 17-mile mountain bike trail descending 4,200 vertical feet from the Sierra Nevada crest to the Downieville river canyon – has become one of the most celebrated downhill mountain bike trails in the world. The annual Downieville Classic draws thousands of competitive and recreational mountain bikers from across the globe to this tiny mountain town.
Loyalton (population ~700) is the county’s only other incorporated city – a small ranching and timber community in the Sierra Valley.
All Services
Browse every category and topic available for this county.
The Sierra County Assessor at 100 Courthouse Square, Downieville, CA 95936, phone 530-289-3283, assesses under Proposition 13 rules. No CA estate tax.
Courts & Legal
Sierra County Superior Court at 100 Courthouse Square, Downieville, CA 95936, phone 530-289-3698, handles probate.
Marriage & Vital Records
Marriage licenses, divorce records, and birth & death certificates are handled by the following office(s):
CLERK-RECORDER (Deeds, Marriage Licenses)
100 Courthouse Square, Downieville, CA 95936
(530) 289-3295
County Clerk
(530) 289-3295
Genealogy
County-level record sources
Sierra County Superior Court (marriage licenses, will and estate case files – see Probate section above)
Local societies
Sierra County Historical Society, Downieville, CA
Probate & Estate
Losing someone and having to deal with courts and paperwork at the same time is hard. This section won’t make that easier, but it should tell you what to expect, what it costs, and where to go – so at least you’re not walking in blind.
Where to go
Sierra County Superior Court 100 Courthouse Square, Downieville, CA 95936 (530) 289-3698 Hours: Monday–Friday, 9:00 a.m.–4:00 p.m., closed noon–1:00 p.m.
Sierra County is one of California’s smallest counties by population – expect a small, personal courthouse rather than a large clerk’s office.
Step 1: figure out which path applies
California recently increased its small-estate thresholds substantially, so check this first – more estates now qualify to skip full probate than in past years.
Small Estate Affidavit (personal property) – for estates with personal property valued at $208,850 or less (for deaths on or after April 1, 2025; holds through March 31, 2028). No court filing needed – present the signed affidavit directly to the bank or institution holding the property. Must wait at least 40 days after the death, and no probate proceeding can already be pending.
Petition to Determine Succession to Real Property, Primary Residence – for a decedent’s primary California residence valued at $750,000 or less (Judicial Council Form DE-310). Requires a 40-day wait, notice to heirs, and a probate referee appraisal.
Affidavit for Real Property of Small Value – for other (non-primary-residence) California real property valued at $69,625 or less (Form DE-305). Requires a 6-month wait.
Formal Probate – required when the estate exceeds these thresholds. California typically uses the Independent Administration of Estates Act (IAEA), letting the personal representative handle most matters without a court hearing for each step.
California is a community property state – a surviving spouse already owns their half of community property, and can often use a simplified Spousal Property Petition (Form DE-221) instead.
If using the small estate affidavit (personal property)
Wait at least 40 days after the death.
Confirm total qualifying California personal property (excluding trust assets, joint tenancy, POD/TOD accounts, and beneficiary-designated accounts) is $208,850 or less, using date-of-death values.
Complete the affidavit under Probate Code § 13100.
Present it with a certified death certificate directly to the bank or institution – no court filing required. Collecting property this way makes you personally liable for the decedent’s unsecured debts up to the value received (Prob. Code § 13109).
IF USING THE PRIMARY RESIDENCE PETITION OR SMALL REAL PROPERTY AFFIDAVIT
Confirm the property qualifies and the applicable waiting period has passed (40 days for the primary-residence petition; 6 months for the small real property affidavit).
File the petition (Form DE-310) or affidavit (Form DE-305) with the Sierra County Superior Court.
A probate referee appraises the property; heirs receive notice.
Once approved, the property transfers without full probate administration.
If formal probate is required
Deliver the original will (if any) to the court clerk within 30 days of learning of the death (Prob. Code § 8200).
File a Petition for Probate (Form DE-111) to admit the will and request appointment as personal representative.
The court issues Letters Testamentary (Form DE-150) or Letters of Administration.
If Independent Administration authority is granted, the personal representative can act on most matters without separate court hearings.
Notice to creditors and an inventory/appraisal (with a probate referee) follow, along with payment of debts and taxes.
The estate closes with a final petition for distribution.
What it costs
Small estate affidavit / real property affidavits: no court filing fee for the personal-property affidavit; filing fees apply to the DE-310 primary-residence petition and DE-305 small real property affidavit.
Formal probate filing fee: several hundred dollars, varying somewhat by county.
Personal representative and attorney compensation: statutory fee schedule based on estate size (Prob. Code §§ 10800–10810) – a percentage that declines as the estate grows.
No California state estate tax or inheritance tax.
Probate filings, estate administration, and guardianship matters are handled by the following office(s):
Public Safety & Arrests
Arrest records, inmate search, and law enforcement services are handled by the following office(s):
SHERIFF
100 Courthouse Square, Downieville, CA 95936
(530) 289-3700
Elections & Voting
Voter registration, polling locations, and elections information are handled by the following office(s):
CA Voter Registration
Health & Human Services
Offices & Contacts
Health services, social services, and assistance programs are handled by the following office(s):
Health Dept
(530) 289-3279
Medi-Cal
(800) 300-1506
Public Health Information
PUBLIC HEALTH
Office: Sierra County Health Department – (530) 289-3201
Services: Very basic public health services; immunizations; vital records; limited staff
Hospital: No local hospital; Plumas District Hospital (Quincy – about 40 miles) and Tahoe Forest (Truckee – 60+ miles) serve county; helicopter evacuation for emergencies
Notes: One of California’s counties with no local hospital; helicopter evacuation is the primary emergency medical response for serious cases; the county nurse is the health department; behavioral health through county; very limited health services infrastructure
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Last verified June 2026
County Facts
County Seat: Downieville
Population: 3,200
Area: 953 sq mi
Established: 1852
Tier: 4
Public Records
TruthFinder
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