Welcome to Declo ...

The city of Declo is located in Cassia County<1>.

The location of Declo has been provided by the Geographic Names Information System (ie- the GNIS).<2>

While we don't have a date for the founding of Declo, you might consider that their post office opened  in 1917.

From the  Census Estimates for 2019, Declo has a population of 366 people<3> (see below for details).

Declo is 4,210 feet [1,283 m] above sea level.<4> In other words, the altitude of Declo is about ¾ mile [or ~1¼ km] above sea level.

Time Zone: Declo lies in the Mountain Time Zone (MST/MDT) and observes daylight saving time

Area codes for Declo: (208) and (986)<5>

The ZIP code for Declo: 83323<6>

Population Details ...

Taken from the 2019 Census Estimates, Declo had an population of 366 people. This is an increase of 6.71% since the 2010 Census (or an increase of 8.28% since the 2000 Census).

At the time of the 2010 Census, Declo had a population of 343 people. This makes Declo the county's 3rd most populous community.

The population of Declo represents 0.02% of the population of Idaho (which has 1,567,582 people), making it the state's 145th most populous community.

With a 2010 count of 343 people, the population of Declo increased 1.48% from the 2000 Census (which had a count of 338 people).

More information can be found on the Census Page for Declo.

Communities near Declo ...

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

• Burley
  (8 miles [12.9 km] to the west)
  • Jump to our Gazetteer entry for Burley
  • Burley is located in Cassia County
  • Population from the 2020 Census: 10,712 people
  • Jump to TripAdvisor's Tourism page for Burley <7>
• Rupert
  (7 miles [11.3 km] to the north)
  • Note: The GPS coordinates that we are using for Rupert have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Rupert
  • Rupert is located in Minidoka County
  • Population from the 2020 Census: 5,946 people
  • Jump to TripAdvisor's Tourism page for Rupert <7>
• Heyburn
  (7 miles [11.3 km] to the west)
  • Note: The GPS coordinates that we are using for Heyburn have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Heyburn
  • Heyburn is located in Minidoka County
  • Population from the 2020 Census: 3,457 people
  • Jump to TripAdvisor's Tourism page for Heyburn <7>
• Paul
  (9 miles [14.5 km] to the northwest)
  • Jump to our Gazetteer entry for Paul
  • Paul is located in Minidoka County
  • Population from the 2020 Census: 1,464 people
  • Jump to TripAdvisor's Tourism page for Paul <7>
• Albion
  (7 miles [11.3 km] to the south)
  • Note: The GPS coordinates that we are using for Albion have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Albion
  • Albion is located in Cassia County
  • Population from the 2020 Census: 278 people
  • Jump to TripAdvisor's Tourism page for Albion <7>
• Malta
  (19 miles [30.6 km] to the southeast)
  • Note: The GPS coordinates that we are using for Malta have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Malta
  • Malta is located in Cassia County
  • Population from the 2020 Census: 208 people
  • Jump to TripAdvisor's Tourism page for Malta <7>
• Acequia
  (10 miles [16.1 km] to the north)
  • Jump to our Gazetteer entry for Acequia
  • Acequia is located in Minidoka County
  • Population from the 2020 Census: 130 people
• Minidoka
  (17 miles [27.4 km] to the northeast)
  • Jump to our Gazetteer entry for Minidoka
  • Minidoka is located in Minidoka County
  • Population from the 2020 Census: 113 people
  • Jump to TripAdvisor's Tourism page for Minidoka <7>
• Amalga
  (6 miles [9.7 km] to the northwest)
  • Jump to our Gazetteer entry for Amalga
  • Amalga is located in Minidoka County
• Pella
  (10 miles [16.1 km] to the west)
  • Jump to our Gazetteer entry for Pella
  • Pella is located in Cassia 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 Declo. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Declo.

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

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

TripAdvisor Tourism Pages for Declo ...

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

Adding Declo to Our Gazetteer ...

We originally found mention of Declo 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 Declo was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<8>

From that list, the Declo post office opened in 1917.

We also found Declo mentioned on a train schedule titled Union Pacific Railroad Time Tables (September 1924).

For more details, see References and Mentions for Declo.

Off-the-Road Links ...

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

The official website for Cassia County: www.cassiacounty.org/

The official website for State of Idaho: www.state.id.us/