Coverage overview
Littleton is an incorporated home-rule city in Arapahoe County, with its own city government and ten coverage ZIP codes, 80120 through 80130. Several of the towns listed below are different: Louviers, Indian Hills, Idledale and Kittredge are all unincorporated communities, governed directly by their county with no separate town government of their own. We describe each one honestly rather than treating every nearby place the same way.
Denver is the one large exception on this list, a consolidated city-county independent of any Colorado county, the only state capital in the country structured this way. Of its many ZIP codes, only the 32 that fall within about 15 miles of Littleton are covered here; ZIP codes further into the city are outside our confirmed coverage range.
Golden also qualifies as a genuine nearby town under the same two-source check used for every entry on this list, coverage data plus independent ZIP-code distance, even though it sits closer to Denver and Jefferson County's own foothills communities than to Littleton's immediate suburbs.