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Welcome to Saint John ...

The town of Saint John is located in Lake County<1>.

While we don't have a date for the founding of Saint John, you might consider that their post office opened  in 1846.

When the people of Saint John refer to themselves (known as a demonym), they frequently use Saint Johner<2>

A typical abbreviation for Saint John: St. John

From the  Census Estimates for 2019, Saint John has a population of 18,802 people<3> (see below for details).

Saint John is 690 feet [210 m] above sea level.<4>.

Time Zone: Saint John lies in the Central Time Zone (CST/CDT) and observes daylight saving time

Note: If you travel south from Saint John (for example, toward Earl Park), you will leave Central Time and cross into the Eastern Time Zone (EST/EDT).

Saint John is located in the (219) area code.

The ZIP code for Saint John: 46373<5>

Websites for Saint John ...

Official Website:

Population Details ...

Taken from the 2019 Census Estimates, Saint John had an population of 18,802 people. This is an increase of 26.61% since the 2010 Census (or an increase of 124.31% since the 2000 Census).

At the time of the 2010 Census, Saint John had a population of 14,850 people. This makes Saint John the county's 12th most populous community.

The population of Saint John represents 0.23% of the total population of Indiana (which has 6,483,802 people), making it the state's 56th most populous community.

With a 2010 count of 14,850 people, the population of Saint John increased 77.17% from the 2000 Census (which had a count of 8,382 people).

More information can be found on the Census Page for Saint John.

Communities Also Named Saint John ...

Using our Gazetteer, we found that there are two Indiana communities named Saint John: This one is located in Lake County and the other is located in Warrick County.

Beyond Indiana, there are 26 communities that are also named Saint John - they are located in California, Kansas (3), Kentucky, Louisiana (4), Maine, Missouri (3), New Brunswick, North Carolina, North Dakota, Ohio, Ontario, Tennessee (2), Texas, Utah, Washington (2) and Wisconsin.

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

Communities near Saint John ...

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

  • Hammond
    (9 miles [14.5 km] to the north)
  • Gary
    (11 miles [17.7 km] to the northeast)
    • Jump to our Gazetteer entry for Gary
    • Gary is located in Lake County
    • Population from the 2020 Census: 74,693 people
    • Jump to TripAdvisor's Tourism page for Gary <6>
  • Tinley Park
    (19 miles [30.6 km] to the northwest)
    • Note: The GPS coordinates that we are using for Tinley Park have been provided by the GNIS.<7> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for Tinley Park
    • Tinley Park is located in Cook County (IL)
    • Population from the 2020 Census: 55,221 people
    • Jump to TripAdvisor's Tourism page for Tinley Park <6>
  • Portage
    (17 miles [27.4 km] to the northeast)
  • Calumet City
    (11 miles [17.7 km] to the north)
  • Merrillville
    (7 miles [11.3 km] to the east)
  • Crown Point
    (6 miles [9.7 km] to the east)
  • Chicago Heights
    (9 miles [14.5 km] to the northwest)
  • Hobart
    (12 miles [19.3 km] to the northeast)
  • East Chicago
    (13 miles [20.9 km] to the north)
    • Note: The GPS coordinates that we are using for East Chicago have been provided by the GNIS.<7> The coordinates still need to be verified.
    • Jump to our Gazetteer entry for East Chicago
    • East Chicago is located in Lake County
    • Population from the 2020 Census: 27,742 people
    • Jump to TripAdvisor's Tourism page for East Chicago <6>

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 Saint John. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Saint John.

Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Saint John. 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 Saint John.

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

TripAdvisor Tourism Pages for Saint John ...

Looking for more information about Saint John? 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 Saint John, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Saint John.

Adding Saint John to Our Gazetteer ...

We originally found mention of Saint John 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 Saint John was in the book titled U.S. Post Offices (Oct. 1846).

We also found Saint John in the book titled Table of U.S. Post Offices in the United States (Jan. 1851).

For more details, see References and Mentions for Saint John.

The official website for Saint John:

The official website for Lake County:

The official website for State of Indiana:

Footnotes ...

<1>If you're interested in how the shape of Indiana's counties, including Lake, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>A demonym is the name for a resident of a community which is usually derived from (or is related to) the name of that community. In other words, it's how the residents of Saint John refer to themselves. It's important to note that there aren't any rules for taking a town's name and turning it into a demonym. A demonym is informal and while the majority of Saint John may use one name, keep in mind that others may use something different.
<3>Population counts have been provided by the U.S. Census Bureau. For more detail, please visit our Census Page for Saint John.
<4>The elevation is an estimate for the area around Saint John - it will be higher in some places and lower in others.
<5>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 town (such as Saint John). When looking for a ZIP Code, whether Saint John or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<6>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
<7>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.


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This page was last modified/updated: 07 Apr 2024