Declo, ID Profile: Facts, Map & Data


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Declo, Idaho - Basic Facts

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The City of Declo had a population of 474 as of July 1, 2017.

The primary coordinate point for Declo is located at latitude 42.5196 and longitude -113.6288 in Cassia County. The formal boundaries for the City of Declo (see map below) encompass a land area of 0.28 sq. miles and a water area of 0 sq. miles. Cassia County is in the Mountain time zone (GMT -7). The elevation is 4,219 feet.

The City of Declo (GNIS ID: 2410308) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Idaho is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of Declo is located within Declo Division of Cassia County.

Beneath the boundary map are tables with Declo population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

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City of Declo, ID Boundary Map

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Boundary Maps: Declo Division | Cassia County | Idaho Counties

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Declo, ID Data & Demographics (As of July 1, 2017)


Total Population 474
Daytime Population: Workers 181
Daytime Population: Residents 245
Total Daytime Population (TDP) 426
Ratio TDP/Total Population1 0.90
Population in Households 474
Population in Familes 426
Population in Group Qrtrs 0
Population Density2 1,670
Diversity Index3 50


Median Household Income $46,829
Average Household Income $55,827
Per Capita Income $18,697


Total Housing Units 168 (100%)
Owner Occupied HU 123 (73.2%)
Renter Occupied HU 35 (20.8%)
Vacant Housing Units 10 ( 6.0%)
Median Home Value $172,222
Average Home Value $224,194


Total Households 158
Average Household Size 3.0
Family Households 124
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2017 2017-2022
Population 4.56% 2.53%
Households 4.48% 2.53%
Families 5.01% 2.46%
Median Household Income   1.78%
Per Capita Income   2.25%

Declo, ID - Peer Comparisons by Rank and Percentile

The table below compares Declo to the other 227 incorporated cities, towns and CDPs in Idaho by rank and percentile using July 1, 2017 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 # 141 38th
Population Density # 59 74th
Diversity Index # 62 73rd
Median Household Income # 82 64th
Per Capita Income # 172 25th

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

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