Janesville, CA Profile: Facts, Map & Data

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Janesville, California - Basic Facts

The Janesville Census Designated Place is a community or populated place (Class Code U5) located in Lassen County at latitude 40.2764 and longitude -120.5442. Lassen County is in the Pacific time zone (GMT -8). The elevation is 4,239 feet.

The formal official name is the Janesville Census Designated Place, but most people and references simply refer to it as Janesville, California.

The U5 Census Class Code for Janesville indicates a populated place that is also a census designated place with the same name. The Census Designated Place has a Functional Status Code "S" which identifies a statistical entity.

The formal boundaries for the Janesville Census Designated Place (see map below) encompass a land area of 13.19 sq. miles and a water area of 0.01 sq. miles.

Janesville Census Designated Place, CA Boundary Map

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Boundary Maps: Susanville CCD | Lassen County | California Counties

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Janesville, CA Data & Demographics (As of July 1, 2014)


Total Population 1,522
Population in Households 1,515
Population in Familes 1,331
Population in Group Qrtrs 7
Population Density1 115
Diversity Index2 31


Total Households 583
Average Household Size 2.6
Family Households 450
Average Family Size 3


Total Housing Units 675 (100%)
Owner Occupied HU 483 (71.6%)
Renter Occupied HU 100 (14.8%)
Vacant Housing Units 92 (13.6%)
Median Home Value $192,913
Average Home Value $208,626


Median Household Income $67,718
Average Household Income $80,700
Per Capita Income $31,079
  (Compound Annual Growth Rates)


2010-2014 2014-2019
Population 1.85% 0.3%
Households 2.04% 0.34%
Families 1.92% 0.35%
Median Household Income   1.86%
Per Capita Income   1.49%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Janesville, CA - Peer Comparisons by Rank and Percentile

The table below compares Janesville to the other 1,523 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2014 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 948 38th
Population Density1 # 1259 17th
Diversity Index2 # 1348 11th
Median Household Income # 413 73rd
Per Capita Income # 496 67th

Additional comparisons and rankings can be made with a VERY EASY TO USE California Census Data Comparison Tool.