Johnstown, California

Johnstown: Situated at an elevation of 597 feet in inland San Diego County, this unincorporated community lies within a semi-rural area near Lakeside.

About

Johnstown is a city located in the county of San Diego in the U.S. state of California.

Quick Facts about Johnstown

State California (United States)
County San Diego County
Latitude & Longitude 32.8381,-116.8967
Time Zone America/Los_Angeles
Local time 11:52:59 (6th November 2026)
Weather 55℉ Mostly Clear 7-days weather

Geography

Johnstown is located at 32°50'17"N 116°53'48"W (32.8381100, -116.8966900).

Johnstown map

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Weather

55°F
Mostly Clear
0 to 5 mph E Tonight

Mostly clear, with a low around 55. East wind 0 to 5 mph.

7-Day Forecast

Nearby Schools and Colleges

Schools and campuses linked to Johnstown, CA. Select a name to open its map and contact details.

Code Name City ZIP
117575 Southern California Seminary El Cajon (CA) 92019-1108

Nearby Transit Stations (19)

Rail and bus stations connected to Johnstown, CA. Select a station to open its map and address details.

Code Name Address Type
SAN Santa Fe Depot 1050 Kettner Blvd RAIL
OLT Old Town Transit Center 4005 Taylor Street RAIL
SRB Sorrento Valley station 11170 Sorrento Valley Road RAIL
SOL Solana Beach 105 North Cedros Avenue RAIL
ENC Encinitas, CA 25 East D Street RAIL

Closest post offices linked to Johnstown.

Post Office Name City ZIP
Lakesid Post Office Lakeside (CA) 92040

Other places with the same name (4)

  • Johnstown, Pennsylvania city in Cambria County, Pennsylvania, United States. with a population of 18,939 people.
  • Johnstown, Colorado municipality in Colorado, USA. with a population of 13,923 people.
  • Johnstown, New York city in the state of New York, USA. with a population of 7,230 people.
  • Johnstown, Ohio village in Licking County, Ohio, United States. with a population of 5,127 people.

Other cities in San Diego County

Cities, towns, neighborhoods & other populated places in San Diego County , CA. (more)

City Name Population Title
San Diego 1,422,420 The eighth most populous city in the United States and the center of the San Diego metropolitan area.
Chula Vista 272,979 The second most populous city in San Diego County, California.
Oceanside 174,648 The second most populous city in San Diego County, California.
Escondido 149,943 The second most populous city in San Diego County, California.
Carlsbad 115,599 The most populous city in San Diego County, California.
El Cajon 102,401 The second most populous city in San Diego County, California.
Vista 100,636 The most populous city in San Diego County, California.
San Marcos 97,477 The second most populous city in San Diego County, California.
Encinitas 62,671 The most populous city in San Diego County, California.
National City 61,394 The most populous city in San Diego County, California.
La Mesa 59,724 The most populous city in San Diego County, California.
Santee 57,770 A city in San Diego County, California.
Poway 49,246 A city in San Diego County, California.
La Presa 34,169 Census designated place
Fallbrook 30,534 Unincorporated community in San Diego County, California, United States
Imperial Beach 27,325 City in California, USA