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Welcome to Janesville ...

Janesville is located in Lassen County<1>.

While we don't have a date for the founding of Janesville, you might consider that their post office opened  in 1861.

Janesville is 4,230 feet [1,289 m] above sea level.<2> In other words, the altitude of Janesville is about ¾ mile [or ~1¼ km] above sea level.

Time Zone: Janesville lies in the Pacific Time Zone (PST/PDT) and observes daylight saving time

Janesville is located in the (530) area code.

The ZIP code for Janesville: 96114<3>

Communities Also Named Janesville ...

Using our Gazetteer, we found that there are 7 communities that are also named Janesville - they are located in Illinois, Iowa, Kansas, Minnesota, New York, Pennsylvania and Wisconsin.

For more information, see our Tidbits & Trivia Page for Janesville.

Communities near Janesville ...

We have created a list of 10 communities that are near Janesville.

  • Susanville
    (10 miles [16.1 km] to the northwest)
  • Leavitt
    (6 miles [9.7 km] to the north)
    • Jump to our Gazetteer entry for Leavitt
    • Leavitt is located in Lassen County
  • Standish
    (7 miles [11.3 km] to the northeast)
  • Litchfield
    (9 miles [14.5 km] to the northeast)
  • Belfast
    (10 miles [16.1 km] to the north)
    • Jump to our Gazetteer entry for Belfast
    • Belfast is located in Lassen County
  • Milford
    (11 miles [17.7 km] to the southeast)
  • Wendel
    (15 miles [24.1 km] to the east)
  • Herlong Junction
    (18 miles [29 km] to the southeast)
    • Note: The GPS coordinates that we are using for Herlong Junction have been provided by the GNIS.<5> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Herlong Junction
    • Herlong Junction is located in Lassen County
  • Karlo ‑ Historic
    (20 miles [32.2 km] to the northeast)
    • Note: The GPS coordinates that we are using for Karlo have been provided by the GNIS.<5> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Karlo
    • Karlo is located in Lassen County
    • Former name for Karlo:
    • Secret
  • Patton Village
    (22 miles [35.4 km] to the southeast)
    • Note: The GPS coordinates that we are using for Patton Village have been provided by the GNIS.<5> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Patton Village
    • Patton Village is located in Lassen County

To Help With Your Genealogy Research ...

We have a couple of sections for those tracing their genealogy.

We created a list of cemeteries that are in the area around Janesville. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Janesville.

Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Janesville. Our list includes information such as whether the 1895 community had a post office or railroad service. See our List of 1890's Communities around Janesville.

We also have a detailed list of newspapers that have been published in the area around Janesville. See our Newspapers Page for Janesville.

TripAdvisor Tourism Pages for Janesville ...

Looking for more information about Janesville? A wonderful source is the TripAdvisor website. We always start with the TripAdvisor Tourism page, where you can read an overview with links that will help you find lodging, restaurants and attractions.

In addition to the Tourism page for Janesville, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Janesville.

Adding Janesville to Our Gazetteer ...

We originally found mention of Janesville in both the FIPS-55 and the GNIS. For more information, see the FIPS and GNIS Codes sections on our Miscellaneous Page.

From our notes, the earliest published mention we've found for Janesville was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<6>

From that list, the Janesville post office opened in 1861.

We also found Janesville in the book titled List of Post Offices in the United States (1870).

For more details, see References and Mentions for Janesville.

Unfortunately, we don't know of a website for Janesville. If you can help, please contact us through our Feedback Page.

The official website for Lassen County:

The official website for State of California:

Footnotes ...

<1>If you're interested in how the shape of California's counties, including Lassen, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>The elevation is an estimate for the area around Janesville - it will be higher in some places and lower in others.
<3>ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a community (such as Janesville). When looking for a ZIP Code, whether Janesville or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<4>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
<5>The location has been supplied by the Geographic Names Information System - which is maintained by the U.S. Geological Survey (USGS). While these values should be definitive, we found that accuracy can vary and you should double-check the location if accuracy is required.
<6>A copy of their list with background information can be found at:


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This page was last modified/updated: 07 Apr 2024