In 2023, Declo, ID had a population of 514 people with a median age of 38 and a median household income of $46,780. Between 2022 and 2023 the population of Declo, ID grew from 498 to 514, a 3.21% increase and its median household income declined from $48,438 to $46,780, a −3.42% decrease.
The 5 largest ethnic groups in Declo, ID are White (Non-Hispanic) (70.8%), Two+ (Hispanic) (15.6%), Other (Hispanic) (8.37%), Two+ (Non-Hispanic) (3.7%), and Black or African American (Non-Hispanic) (0.973%).
None of the households in Declo, ID reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
99.8% of the residents in Declo, ID are U.S. citizens.
In 2023, the median property value in Declo, ID was $218,200, and the homeownership rate was 38%.