Welcome to Longmont ...
The city of Longmont is primarily located in Boulder County<1>. A portion of Longmont extends into Weld County.
While we don't have a date for the founding of Longmont, you might consider that their post office opened in 1873.
The city was incorporated November 15, 1885.
From the Census Estimates for 2019, Longmont has a population of 97,316 people<2> (see below for details).
Longmont is 4,990 feet [1,521 m] above sea level.<3> In other words, the altitude of Longmont is about 1 mile [or ~1½ km] above sea level.
Time Zone: Longmont lies in the Mountain Time Zone (MST/MDT) and observes daylight saving time
Telephone area codes for Longmont: (303) and (720)<4>
The ZIP codes for Longmont: 80501-80504<5>
Websites for Longmont ...
Official Website: www.ci.longmont.co.us/
Chamber of Commerce: www.longmontchamber.org/
Population Details ...
Taken from the 2019 Census Estimates, Longmont had an population of 97,316 people. This is an increase of 12.8% since the 2010 Census (or an increase of 36.89% since the 2000 Census).
At the time of the 2010 Census, Longmont had a population of 86,270 people (which is 29.29% of the total population of Boulder County). This makes Longmont the county's 2nd most populous community.
The population of Longmont represents 1.72% of the total population of Colorado (which has 5,029,196 people), making it the state's 13th most populous community.
With a 2010 count of 86,270 people, the population of Longmont increased 21.35% from the 2000 Census (with a count of 71,093 people).
More information can be found on the Census Page for Longmont.
Communities near Longmont ...
We have created a list of 10 communities that are near Longmont.
- Thornton
(19 miles [30.6 km] to the southeast)- Note: The GPS coordinates that we are using for Thornton have been provided by the GNIS.<6> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Thornton
- Thornton is located in Adams County
- Population from the 2020 Census: 148,113 people
- Jump to TripAdvisor's Tourism page for Thornton <7>
- Boulder
(14 miles [22.5 km] to the southwest)- Jump to our Gazetteer entry for Boulder
- Boulder is located in Boulder County
- Population from the 2020 Census: 107,645 people
- Jump to TripAdvisor's Tourism page for Boulder <7>
- Loveland
(16 miles [25.7 km] to the north)- Note: The GPS coordinates that we are using for Loveland have been provided by the GNIS.<6> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Loveland
- Loveland is located in Larimer County
- Population from the 2020 Census: 83,517 people
- Jump to TripAdvisor's Tourism page for Loveland <7>
- Broomfield
(15 miles [24.1 km] to the south)- Note: The GPS coordinates that we are using for Broomfield have been provided by the GNIS.<6> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Broomfield
- Broomfield is located in Broomfield County
- Population from the 2020 Census: 72,236 people
- Jump to TripAdvisor's Tourism page for Broomfield <7>
- Northglenn
(19 miles [30.6 km] to the south)- Note: The GPS coordinates that we are using for Northglenn have been provided by the GNIS.<6> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Northglenn
- Northglenn is located in Adams County
- Population from the 2020 Census: 38,845 people
- Jump to TripAdvisor's Tourism page for Northglenn <7>
- Erie
(9 miles [14.5 km] to the south)- Note: The GPS coordinates that we are using for Erie have been provided by the GNIS.<6> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Erie
- Erie is located in Boulder County
- Population from the 2020 Census: 30,318 people
- Jump to TripAdvisor's Tourism page for Erie <7>
- Lafayette
(12 miles [19.3 km] to the south)- Note: The GPS coordinates that we are using for Lafayette have been provided by the GNIS.<6> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Lafayette
- Lafayette is located in Boulder County
- Population from the 2020 Census: 28,579 people
- Jump to TripAdvisor's Tourism page for Lafayette <7>
- Louisville
(13 miles [20.9 km] to the south)- Jump to our Gazetteer entry for Louisville
- Louisville is located in Boulder County
- Population from the 2020 Census: 19,060 people
- Jump to TripAdvisor's Tourism page for Louisville <7>
- Firestone
(8 miles [12.9 km] to the east)- Note: The GPS coordinates that we are using for Firestone have been provided by the GNIS.<6> The coordinates still need to be verified.
- Jump to our Gazetteer entry for Firestone
- Firestone is located in Weld County
- Population from the 2020 Census: 15,298 people
- Jump to TripAdvisor's Tourism page for Firestone <7>
- Johnstown
(14 miles [22.5 km] to the northeast)- Jump to our Gazetteer entry for Johnstown
- Johnstown is located in Weld County
- Population from the 2020 Census: 13,923 people
- Jump to TripAdvisor's Tourism page for Johnstown <7>
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 Longmont. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Longmont.
Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Longmont. 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 Longmont.
We also have a detailed list of newspapers that have been published in the area around Longmont. Our list includes 26 papers. See our Newspapers Page for Longmont.
TripAdvisor Tourism Pages for Longmont ...
Looking for more information about Longmont? 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 Longmont, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Longmont.
Adding Longmont to Our Gazetteer ...
We originally found mention of Longmont 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 Longmont was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<8>
From that list, the Longmont post office opened in 1873.
We also found Longmont in the book titled Business Atlas and Shippers' Guide (1895).
For more details, see References and Mentions for Longmont.
Off-the-Road Links ...
The official website for Longmont: www.ci.longmont.co.us/
The official website for Boulder County: www.co.boulder.co.us/
The official website for State of Colorado: https://www.colorado.gov/
Footnotes ...
| <1> | If you're interested in how the shape of Colorado's counties, including Boulder, have changed over time, we recommend the Atlas of Historical County Boundaries. |
| <2> | Population counts have been provided by the U.S. Census Bureau. For more detail, please visit our Census Page for Longmont. |
| <3> | The elevation is an estimate for the area around Longmont - it will be higher in some places and lower in others. |
| <4> | Area code (720) is an overlay for area code (303). |
| <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 city (such as Longmont). When looking for a ZIP Code, whether Longmont or elsewhere, it's always best to check the website of the United States Postal Service (USPS). Our list of ZIP Codes for Longmont includes: 80501, 80502, 80503 & 80504. |
| <6> | 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. |
| <7> | While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program. |
| <8> | A copy of their list with background information can be found at: https://cblevins.github.io/us-post-offices/data-biography/ |