California›Plumas County

JohnsvilleCA

A town in California.

Land area

14 sq mi

Is Johnsville a good place to live?

Only 6 of the 847 California towns we compare have a lower January low than Johnsville. 85% of the land in Johnsville is conserved, against 4.3% in California’s towns and 4.3% across U.S. towns. We don’t grade Johnsville yet; the figures below are still real.

What makes Johnsville stand out

Where Johnsville beats most towns.

1historic places

History

Settled in 1882

1 place on the National Register

A history going back 144 years.

Remnants of the old mining town of Johnsville, now largely abandoned except for a few residences and the Iron Door, a p…, 2012

Johnsville’s story

144 years in pictures

Census counts: 21 in 2000, 22 in 2020. The archive holds 10 old photos and papers going back to 2012 and 4 maps from 1943 on.

1 place on the National Register of Historic Places.

1882Johnsville is settled

Explore the history →

Getting set up

Moving to Johnsville: who provides what

Johnsville is unincorporated, so Plumas County and regional agencies provide most services.

PowerPlumas-Sierra Rural Elec CoopEIAHIFLD · EIA

InternetProviders and speedsData pending · D4

Trash & county servicesPlumas CountyPlumas County provides services here

SchoolsPlumas Unified School DistrictWhich school depends on your addressNCES

Register to voteOnlineIn California you can register online until 15 days before Election Day, in person up to and including Election Day, or by mail (postmarked 15 days before).vote.gov

Who runs elections herePlumas County Clerk-Recorder-ElectionsPlumas County; contacts on the Handbook page.FVAP, Jul 2025

ZIP code9610396103 100%Census 2020

EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.

The data

Ordered by what stands out in Johnsville.

Outdoors

Conservation land takes up nearly a third of Johnsville

17 miles of trail. In Johnsville, the trail density is 1.3 miles per square mile.

85.2%conserved

85.2%

conserved · 7,486 of 8,789 acres

17 mi

of trails · 1.3 per sq mi

Full pageJohnsville’s outdoors pageOpen the page

Trail map17 miles of trail, mapped Pick a walkPick a walk Conserved land85.2% conserved · 7,486 acres protected Questions“Where can I hike in Johnsville?”

Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US

Natural hazards

Johnsville has a very high natural-hazard risk, chiefly from inland flooding

Johnsville’s natural-hazard score from FEMA stands at 98 of 100. Expected losses in Johnsville break down as 58% from inland flooding and 28% from wildfires.

98risk score of 100

FEMA risk score

Inland floodingWildfireEarthquakes

Full pageJohnsville’s hazards pageOpen the page

What it facesVery high risk Flood claims0 paid flood claims · No paid flood claims on record Past disasters20 disaster declarations · Declared for the county Get ready0.5 events a year, on average · Ready for inland flooding

FEMA National Risk Index · OpenFEMA

Climate

Johnsville has four seasons and pleasant summers

The town’s July high comes in at 84°F.

28″snow a winter

Typical low → high °F

Winter25–44°

Spring33–58°

Summer48–81°

Fall36–65°

Sep 25

typical first frost

May 22

typical last frost

+1.2°

vs. the 20th-century average

Full pageJohnsville’s climate pageOpen the page

A year of weatherJuly highs 84°, January lows 25°Rain & snow28″ of snow a winter · 44 inches of rain and snow a year Heating & coolingMostly a heating bill Then and now+1.2° vs. the 20th century · Warmer than the 20th-century average

NOAA U.S. Climate Normals, 1991–2020

Health

A larger share of adults have high blood pressure in Johnsville than in most of California or the rest of the country

Among adults in Johnsville, 12% binge drink and 81% had a checkup this year. CDC measures, 32 in all: Johnsville beats California on 15 and trails on 9. For adults locally, the share who have obesity is 30%.