983 Area Code: Denver, Colorado

The 983 area code is among the newer overlays planned for the Denver region, sharing geography with the long-running 303 and the more recent 720. Denver itself anchors the directory's records here, set on the high plains east of the Rockies at an elevation around a mile above sea level. The metro has been one of the faster-growing in the country through the past several decades, and the surrounding numbering codes have been filling with allocations to keep pace. The 983 designation is a member of the North American Numbering Plan and is currently in the early phase of being populated with active number assignments.

In the directory's records associated with 983 numbers, other Colorado cities — Colorado Springs and Fort Collins among them — appear regularly. Neither is inside the 983 footprint; the pattern reflects standard Front Range number mobility and the cross-linkage that shows up in public records. The directory's prefix-level holdings for 983 are still being assembled, and the working count of distinct prefixes we track in detail represents a small early-stage subset of the prefix population that will eventually populate this code.

Denver's home values run substantially above the US median, in line with broader Front Range pricing pressure. Median household income sits well above the national reading, the city's median age skews a few years under the US figure, and population places Denver among the larger Mountain West metros. The 983 footprint shares those features with 303 and 720, since all three codes overlap geographically.