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Area Code 983

Area code 983 is in Colorado, USA , spanning 14 counties and serving 74 cities, including Denver, Westminster or Boulder; it currently uses 11 prefixes, assigned from 983-200-XXXX through 983-999-XXXX.

In service since June 17, 2022, area code 983 is an overlay Numbering Plan Area, part of overlay complex 303/720/983.

The current local time is .

983 area code location on a map

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For exact boundaries see official 983 area code map

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Locate any 983-NXX prefix:

NPANXX Area served1 Date2
983-200 Longmont 04/07/2023
983-201 Denver 09/06/2023
983-202 Denver 01/23/2024
983-203 Denver 02/15/2024
983-222 Roggen 05/09/2023
983-333 Denver 12/15/2023
983-444 Denver 01/31/2024
983-777 Denver 10/03/2023
983-888 Denver 06/02/2023
983-983 Longmont 03/29/2023
983-999 Denver 08/08/2023
  1. For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
  2. Assignment date.
  3. last updated: June 18, 2024
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Cities in area code 983

City1 County Time2
Allenspark Boulder M
Arvada Jefferson M
Aurora Adams M
Bailey Park M
Bennett Adams M
Black Hawk Gilpin M
Bond Eagle M
Boulder Boulder M
Brighton Adams M
Broomfield Broomfield M
Buffalo Creek Jefferson M
Byers Arapahoe M
Castle Rock Douglas M
Central City Gilpin M
Commerce City Adams M
Conifer Jefferson M
Dacono Weld M
Deer Trail Arapahoe M
Denver Adams M
Dumont Clear Creek M
Dupont Adams M
Eastlake Adams M
Elbert El Paso M
Eldorado Springs Boulder M
Elizabeth Elbert M
Empire Clear Creek M
Englewood Arapahoe M
Erie Weld M
Evergreen Jefferson M
Firestone Weld M
Fort Lupton Weld M
Franktown Douglas M
Frederick Weld M
Georgetown Clear Creek M
Golden Jefferson M
Grant Park M
Henderson Adams M
Hereford Weld M
Highlands Ranch Douglas M
Hudson Weld M
Hygiene Boulder M
Idaho Springs Clear Creek M
Idledale Jefferson M
Indian Hills Jefferson M
Jamestown Boulder M
Keenesburg Weld M
Kiowa Elbert M
Kittredge Jefferson M
Lafayette Boulder M
Lakewood Jefferson M
Larkspur Douglas M
Littleton Arapahoe M
Longmont Boulder M
Louisville Boulder M
Louviers Douglas M
Lyons Boulder M
Morrison Jefferson M
Nederland Boulder M
Niwot Boulder M
Parker Douglas M
Pine Jefferson M
Pinecliffe Boulder M
Roggen Weld M
Rollinsville Gilpin M
Sedalia Douglas M
Sedgwick Sedgwick M
Shawnee Park M
Silver Plume Clear Creek M
Strasburg Adams M
Thornton Adams M
Ward Boulder M
Watkins Adams M
Westminster Adams M
Wheat Ridge Jefferson M
  1. Listed above are most places served by USA area code 983. When multiple places in a US state share the same name we list the largest one only. Cities with population over 50,000 are displayed in bold text.
  2. M stands for Mountain Time Zone (currently ).
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