List of All Area Codes in World

303 Area Code, US

US Flag Here you will find the detailed information of area code 303 of all cities, states, area, region that is covered by area code 303. Multiple cities that are nearby in 303 area code can represent the same area code, so do not be confused. In addition, there is a list of all zip codes that fall under the area code 303.

List of All City, Places, Region - Area Code 303

303 - Area Code Covers These States
State Colorado 

303 Area Code identifies Colorado State, US and this area code cover around 57 cities in Colorado. Here is the list of all cities that are covered by area code.

303 - Area Code Covers 57 Cities in Colorado
Cities Allenspark,  Arvada,  Aurora,  Bennett,  Boulder,  Brighton,  Broomfield,  Buffalo Creek,  Byers,  Castle Rock,  Commerce City,  Conifer,  Dacono,  Deer Trail,  Denver,  Dumont,  Dupont,  Eastlake,  Eldorado Springs,  Empire,  Englewood,  Erie,  Evergreen,  Firestone,  Fort Lupton,  Franktown,  Frederick,  Georgetown,  Golden,  Hudson,  Hygiene,  Idaho Springs,  Idledale,  Indian Hills,  Keenesburg,  Kittredge,  Lafayette,  Larkspur,  Littleton,  Lone Tree,  Longmont,  Louisville,  Louviers,  Lyons,  Morrison,  Niwot,  Orchard,  Parker,  Pine,  Roggen,  Sedalia,  Silver Plume,  Strasburg,  Thornton,  Watkins,  Westminster,  Wheat Ridge, 

FAQ - Related To 303 Area Code

  • Which states 303 Area code belongs in US?

    The 303 area code belongs to Colorado state.

ZIP Codes list for area code 303

# Zip Code Postal City County FIPS State
1 80510 Allenspark 013 Colorado [CO]
2 80001 Arvada 059 Colorado [CO]
3 80010 Aurora 005 Colorado [CO]
4 80102 Bennett 001 Colorado [CO]
5 80301 Boulder 013 Colorado [CO]
6 80601 Brighton 001 Colorado [CO]
7 80020 Broomfield 014 Colorado [CO]
8 80425 Buffalo Creek 059 Colorado [CO]
9 80103 Byers 005 Colorado [CO]
10 80104 Castle Rock 035 Colorado [CO]
11 80022 Commerce City 001 Colorado [CO]
12 80433 Conifer 059 Colorado [CO]
13 80514 Dacono 123 Colorado [CO]
14 80105 Deer Trail 005 Colorado [CO]
15 80201 Denver 031 Colorado [CO]
16 80436 Dumont 019 Colorado [CO]
17 80024 Dupont 001 Colorado [CO]
18 80614 Eastlake 001 Colorado [CO]
19 80025 Eldorado Springs 013 Colorado [CO]
20 80438 Empire 019 Colorado [CO]
21 80111 Englewood 005 Colorado [CO]
22 80516 Erie 013 Colorado [CO]
23 80437 Evergreen 059 Colorado [CO]
24 80520 Firestone 123 Colorado [CO]
25 80621 Fort Lupton 123 Colorado [CO]
26 80116 Franktown 035 Colorado [CO]
27 80530 Frederick 123 Colorado [CO]
28 80444 Georgetown 019 Colorado [CO]
29 80401 Golden 059 Colorado [CO]
30 80642 Hudson 123 Colorado [CO]
31 80533 Hygiene 013 Colorado [CO]
32 80452 Idaho Springs 019 Colorado [CO]
33 80453 Idledale 059 Colorado [CO]
34 80454 Indian Hills 059 Colorado [CO]
35 80643 Keenesburg 123 Colorado [CO]
36 80457 Kittredge 059 Colorado [CO]
37 80026 Lafayette 013 Colorado [CO]
38 80118 Larkspur 035 Colorado [CO]
39 80120 Littleton 005 Colorado [CO]
40 80124 Lone Tree 035 Colorado [CO]
41 80501 Longmont 013 Colorado [CO]
42 80027 Louisville 013 Colorado [CO]
43 80131 Louviers 035 Colorado [CO]
44 80540 Lyons 013 Colorado [CO]
45 80465 Morrison 059 Colorado [CO]
46 80544 Niwot 013 Colorado [CO]
47 80649 Orchard 087 Colorado [CO]
48 80134 Parker 035 Colorado [CO]
49 80470 Pine 059 Colorado [CO]
50 80652 Roggen 123 Colorado [CO]
51 80135 Sedalia 035 Colorado [CO]
52 80476 Silver Plume 019 Colorado [CO]
53 80136 Strasburg 001 Colorado [CO]
54 80241 Thornton 001 Colorado [CO]
55 80137 Watkins 001 Colorado [CO]
56 80030 Westminster 001 Colorado [CO]
57 80033 Wheat Ridge 059 Colorado [CO]

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