CO County Codes
Old Colorado License Plates County Numbers
ShopLicensePlates is your source for vintage and antique old Colorado license plates for sale. Colorado issued single license plates from 1913 to 1919. Pairs of license plates were issued from 1920 to 1942. From 1943 to 1946, Colorado issued single license plates. Then, in 1947, Colorado returned to issuing pairs of license plates and continues to do this to the present day.
Our handy Colorado license plates County Numbers code key will help you to decipher which County your license plate(s) was issued in. Colorado started to use County Codes in 1916. From 1916 to 1926, the County itself was assigned a range of license plate numbers which determined where it was assigned. From 1927 to 1931, the Counties were not designated. Then, in 1932, Colorado again began assigning numeric County Numbers and continued this until 1958. Starting in 1959 and until 2000, Colorado used alphabetic coding which showed the County of issue.
Because laws vary by State with respect to the use of our real and authentic vintage license plates on an old vehicle, we always recommend that you contact your DMV or your local DMV office to confirm that you can use these on your vehicle prior to your purchase. As of this date, vehicles that are at least 30 years old may display YOM license plates. Don't miss the old Colorado license plates for sale now at ShopLicensePlates!
County | 1916 | 1917 | 1919-1921 | 1922 |
Denver | 1-12000 | 1-15000 | 1-33000 | 1-40000 |
El Paso | 15001-17500 | 15001-18000 | 50001-57000 | 50001-60000 |
Delta | 17501-18000 | 36176-36600 | 135001-136500 | 108001-109700 |
Larimer | 18001-19700 | 19001-21200 | 167001-172000 | 134001-140000 |
Adams | 19701-20000 | 18401-19000 | 101001-102800 | 80001-82700 |
Weld | 20001-22300 | 21201-24600 | 80001-88000 | 67501-79000 |
Boulder | 22301-23750 | 24601-26600 | 116001-121000 | 94001-100800 |
Clear Creek | 23751-23800 | 34451-34600 | 128001-128400 | 103701-103900 |
Douglas | 23801-24000 | 31801-32100 | 138001-138600 | 110601-111600 |
Arapahoe | 24001-24500 | 31201-31800 | 106001-107300 | 85501-88500 |
Chaffee | 24501-24800 | 45976-46375 | 125001-125800 | 101501-102350 |
Eagle | 24801-24900 | 34801-34950 | 140001-140300 | 112201-112550 |
Grand | 24901-25000 | 37301-37400 | 149001-149250 | 119901-120150 |
Elbert | 25001-25200 | 32101-32500 | 141001-141900 | 112801-113900 |
Garfield | 25201-25500 | 34951-35400 | 146001-147000 | 118001-119200 |
Jefferson | 25501-25975 | 33701-34400 | 156001-158000 | 124601-127600 |
Jackson | 25976-26050 | 37201-37300 | 155001-155250 | 124101-124400 |
Lake | 26051-26200 | 34601-34800 | 164001-164500 | 132101-132400 |
Lincoln | 26201-26400 | 32501-33000 | 180001-181000 | 145001-146400 |
Logan | 26401-26950 | 27701-28900 | 182001-184500 | 147001-151600 |
Mesa | 26951-27500 | 35476-36175 | 186001-187800 | 152501-155300 |
Phillips | 27501-27800 | 29151-29700 | 207001-208250 | 171001-173000 |
Pitkin | 27801-27850 | 35401-35475 | 209001-209300 | 173701-173875 |
Rio Blanco | 27851-28000 | 36601-36750 | 212001-212300 | 177001-177500 |
Morgan | 28001-28550 | 26601-27700 | 195001-198000 | 160101-164100 |
Gilpin | 28551-28570 | 34401-34450 | 148001-148250 | 119701-119775 |
Yuma | 28571-28940 | 30301-31200 | 230001-232500 | 190201-193900 |
Moffatt | 28941-29020 | 36751-36900 | 190001-190400 | 156201-156800 |
Routt | 29021-29095 | 36901-37200 | 216001-216600 | 180001-180900 |
Sedgwick | 29096-29245 | 28901-29150 | 220001-222000 | 183001-184100 |
Washington | 29246-29515 | 29701-30300 | 226001-227700 | 186501-189500 |
Teller | 29516-29840 | 18801-18400 | 223001-223750 | 185801-186300 |
Archuleta | 29841-29900 | 47941-48050 | 110001-110300 | 89001-89250 |
Park | 29901-29960 | 49751-49900 | 206001-206300 | 170501-170750 |
Summit | 29961-30000 | 49901-50000 | 222001-222220 | 185601-185700 |
Pueblo | 30001-32000 | 37401-39900 | 70001-75000 | 60001-66500 |
Las Animas | 32001-32700 | 40301-41500 | 176001-178500 | 140501-144300 |
Bent | 32701-33000 | 43001-43500 | 113001-114300 | 91501-93300 |
Fremont | 38001-38600 | 45176-45975 | 143001-145000 | 114501-117200 |
Costilla | 38601-38700 | 48351-48500 | 131001-131400 | 104801-105200 |
Huerfano | 38701-39000 | 39901-40300 | 153001-154000 | 121401-123500 |
Otero | 39901-39600 | 41501-42700 | 200001-202600 | 165001-169500 |
Rio Grande | 39601-39950 | 48091-49400 | 213001-214200 | 177701-179450 |
Custer | 39951-39980 | 45101-45175 | 134001-134150 | 107501-107700 |
Mineral | 39981-40000 | 49401-49450 | 189001-189150 | 156001-156075 |
Prowers | 40001-40600 | 43501-44500 | 210001-210800 | 174001-176500 |
Gunnison | 40601-40780 | 46376-46600 | 150001-150500 | 120401-121000 |
Kit Carson | 40781-41000 | 33001-33500 | 162001-163300 | 129501-131600 |
Montrose | 41001-41390 | 46601-47150 | 192001-193200 | 157801-159600 |
Baca | 41391-41500 | 44801-45100 | 111001-111900 | 90501-90750 |
Alamosa | 41501-41750 | 48501-48900 | 104001-104900 | 83501-84600 |
Saguache | 41751-42000 | 49451-49750 | 217001-217500 | 181201-182000 |
Crowley | 42001-42200 | 42701-43000 | 132001-132900 | 106001-107000 |
La Plata | 42201-42400 | 47641-47940 | 165001-166000 | 132501-133600 |
Montezuma | 42401-42500 | 47441-47640 | 191001-191500 | 157001-157600 |
Ouray | 42501-42600 | 47151-47250 | 205001-205250 | 170201-170400 |
Kiowa | 42601-42700 | 44501-44800 | 160001-161200 | 128501-129250 |
Conejos | 42701-42830 | 48051-48350 | 129001-129600 | 104001-104500 |
San Miguel | 42831-42900 | 47251-47400 | 219001-219250 | 186601-182925 |
Cheyenne | 42901-42975 | 33501-33700 | 127001-127500 | 102701-103400 |
Hinsdale | 42976-42990 | 47426-47440 | 152001-152000 | 121301-121330 |
San Juan | 42992-43000 | 47401-47425 | 218001-218150 | 182401-182500 |
Dolores | NONE | NONE | NONE | 110501-110530 |
County | 1923 | 1924 | 1925 | 1926 |
Adams | 88501-92000 | 100001-104500 | 111501-116500 | 118001-124000 |
Alamosa | 92501-93700 | 105001-106500 | 117001-118500 | 124501-126500 |
Arapahoe | 94001-97000 | 107001-111200 | 119101-123600 | 126801-131800 |
Archuleta | 97501-97800 | 111501-112000 | 124101-124500 | 132301-132700 |
Baca | 98001-99400 | 112501-114500 | 124701-126700 | 132901-135100 |
Bent | 99601-101500 | 115001-117600 | 127201-129300 | 135401-137700 |
Boulder | 101801-108600 | 118001-125800 | 129801-138800 | 138001-147500 |
Chaffee | 109001-110000 | 127001-128500 | 139801-141400 | 148001-149800 |
Cheyenne | 110201-111000 | 129001-130400 | 141901-143300 | 150101-151600 |
Clear Creek | 111201-111500 | 131001-131500 | 143601-144200 | 151901-152600 |
Conejos | 111601-112400 | 131801-132800 | 144401-145600 | 152801-154100 |
Costilla | 112601-113050 | 132801-133500 | 145901-146700 | 154301-155200 |
Crowley | 113201-114300 | 133801-135800 | 147001-149000 | 155401-157600 |
Custer | 114501-114700 | 136001-136500 | 149501-150100 | 157901-158600 |
Delta | 114801-116700 | 136801-139500 | 150401-153900 | 158801-162300 |
Denver | 1-45000 | 1-55000 | 1-65000 | 1-70000 |
Dolores | 116901-116950 | 140501-140600 | 154401-154550 | 162801-162950 |
Douglas | 117001-118000 | 140701-142100 | 154701-156200 | 163101-164700 |
Eagles | 118301-118650 | 142301-143000 | 156701-157400 | 164901-165600 |
Elbert | 118801-120100 | 143101-145100 | 157701-150900 | 165801-168000 |
El Paso | 50001-60000 | 55001-65600 | 70001-82000 | 75001-88000 |
Fremont | 120501-123500 | 145501-149700 | 160401-165200 | 168301-173300 |
Garfield | 123701-125000 | 150201-152200 | 165701-167900 | 173801-176000 |
Gilpin | 125301-125400 | 153001-153200 | 168401-168650 | 176301-176550 |
Grand | 125501-125850 | 153501-154000 | 168801-169400 | 176701-177400 |
Gunnison | 126001-126700 | 154301-155300 | 169701-170900 | 177601-178900 |
Hinsdale | 126901-126950 | 155401-155500 | 171401-171550 | 179101-129250 |
Huerfano | 127001-129100 | 155601-158900 | 171701-175300 | 179401-183100 |
Jackson | 129401-129700 | 159601-160100 | 175801-176400 | 183401-184000 |
Jefferson | 129801-133000 | 160501-165000 | 176701-182200 | 184201-189900 |
Kiowa | 133301-134150 | 166001-167300 | 183001-184500 | 190401-191900 |
Kit Carson | 134301-136400 | 167801-170400 | 185001-188000 | 192101-195100 |
Lake | 136601-136950 | 170801-171400 | 188501-189200 | 195401-196200 |
La Plata | 137001-138200 | 171701-173400 | 189501-191400 | 196401-198400 |
Larimer | 80501-88000 | 91001-98500 | 191901-200900 | 198701-208200 |
Las Animas | 138501-142500 | 174001-179600 | 201901-208400 | 208701-215700 |
Lincoln | 142900-144500 | 181001-183300 | 209401-211900 | 216201-218700 |
Logan | 144801-149400 | 184001-188600 | 212401-217000 | 219001-223800 |
Mesa | 149701-152700 | 189501-194000 | 217801-222800 | 224201-229500 |
Mineral | 153101-153200 | 194101-194300 | 223801-224000 | 230001-130200 |
Moffat | 153301-153900 | 194401-195300 | 224201-225300 | 230401-231500 |
Montezuma | 154001-154650 | 195801-196700 | 225601-226800 | 231701-232900 |
Montrose | 154801-156700 | 197001-199500 | 227101-229600 | 233101-235600 |
Morgan | 157001-161000 | 200501-204900 | 230101-234600 | 235901-240600 |
Otero | 161201-165700 | 206001-211000 | 235601-241100 | 241101-246900 |
Ouray | 166001-166250 | 211801-212200 | 242101-242600 | 247501-248000 |
Park | 166401-166750 | 212301-212900 | 242901-243700 | 248201-249100 |
Phillips | 166901-169000 | 213101-215500 | 244001-246600 | 249301-252100 |
Pitkin | 169201-169400 | 216001-216300 | 247101-247450 | 252401-252800 |
Prowers | 169501-172100 | 216401-219600 | 247701-251300 | 253001-256800 |
Pueblo | 60001-67500 | 66001-75100 | 83501-94500 | 89001-101000 |
Rio Blanco | 172401-172900 | 230301-220900 | 252101-252800 | 257201-258000 |
Rio Grande | 173001-174750 | 221501-223700 | 253101-255600 | 258201-260800 |
Routt | 175001-176000 | 224001-225500 | 256101-257900 | 161101-263000 |
Saguache | 176301-177150 | 225901-227100 | 258401-259900 | 263101-264900 |
San Juan | 177401-177500 | 227601-227750 | 260401-260600 | 265101-265300 |
San Miguel | 177601-177950 | 227801-228300 | 260901-261500 | 265501-266200 |
Sedgwick | 178101-179200 | 228801-230300 | 261801-263400 | 266401-268100 |
Summit | 179501-179650 | 231001-231300 | 263901-264300 | 268301-268800 |
Teller | 179801-180400 | 231601-232800 | 264601-266000 | 269001-270500 |
Washington | 180601-183600 | 223001-236200 | 266501-270000 | 270701-274200 |
Weld | 68301-79800 | 77001-89600 | 96001-110000 | 102001-117000 |
Yuma | 184001-187000 | 237301-240800 | 270501-274500 | 274601-278800 |
County | 1932 to 1958 | 1959 to 1982 | 1982 to 1992 | 1992 to 2000 |
Denver | 01 | AA-CV | AAA-BMJ | AAA-DZZ |
Pueblo | 02 | GP-HD | VEZ-VPA | VEZ-VVC |
Weld | 03 | HY-JM | WAA-WME | WAA-WNK |
El Paso | 04 | JX-LL, FR-FV | KAA-LGR | KAA-LZZ |
Las Animas | 05 | LM-LN | UAA-UAC | UAA-UBK |
Larimer | 06 | LU-MK | FHA-FXT | FHA-FZZ |
Boulder | 07 | ML-NF, FH-FP | MAA-MSZ | MAA-NZZ |
Mesa | 08 | NG-NT | UEJ-ULV | UEJ-UNL |
Otero | 09 | PA-PC | UXS-UYW | UXS-UZZ |
Arapahoe | 10 | PH-RP, FA-FG | PAA-RHD | PAA-RZZ |
Jefferson | 11 | RS-TD, HG-HW | GAA-HKU | GAA-JZZ |
Adams | 12 | TE-UF, GA-GG | SAA-SZF | SAA-TZZ |
Logan | 13 | UG-UJ | UCB-UDE | UCB-UEH |
Fremont | 14 | UP-UT | EPV-ESU | EPV-ETV |
Morgan | 15 | UW-UY | UVA-UWJ | UVA-UXR |
Huerfano | 16 | VE | EZF-EZT | EZF-EZW |
Prowers | 17 | VG-VH | VDN-VEJ | VDN-VEY |
Delta | 18 | VL-VN | EFH-EGZ | EFH-EHP |
Yuma | 19 | VS-VT | WTL-WTZ | WTL-WUR |
La Plata | 20 | VV-VY | FDF-FFL | FDP-FGB |
Montrose | 21 | WB-WD | USM-UUD | USM-UUZ |
Baca | 22 | WG | EBE-EBK | EBE-EBW |
Rio Grande | 23 | WJ-WK | VVW-VWS | VVW-VWZ |
Garfield | 24 | WM-WR | ETW-EWB | ETW-EWM |
Conejos | 25 | WS | EDV-EED | EDV-EEK |
Kit Carson | 26 | WU-WV | WUZ-WVJ | WUZ-WVV |
Washington | 27 | WW | WST-WTA | WST-WTA |
Routt | 28 | WZ-XA | VXA-VXY | VXA-VXY |
Bent | 29 | XC | EBX-ECF | EBX-ECL |
Alamosa | 30 | XE-XF | EAA-EAT | EAA-EBD |
Chaffee | 31 | XH-XJ | FAM-FBP | FAM-FCC |
Montezuma | 32 | XL-XM | UPY-USE | UPY-USL |
Lincoln | 33 | XP | UBL-UBU | UBL-UCA |
Elbert | 34 | XS | EPB-EPU, DKA-DKC, EPB-EDU | EPB-EPU |
Saguache | 35 | XU | VYP-VYX | VYP-VZA |
Crowley | 36 | XW | EET-EEZ | EET-EFA |
Phillips | 37 | XY | VBB-VBG | VBB-VBR |
Costilla | 38 | YA | EEL-EES | EEL-EES |
Sedgwick | 39 | YB | WNL-WNR | WNL-WNY |
Gunnison | 40 | YD-YE | EYC-EYU | EYC-EZC |
Lake | 41 | YF-YG | FCD-FCV | FCD-FDE |
Moffat | 42 | YJ-YK | UNS-UPG | UNS-UPX |
Teller | 43 | YL | WRN-WSR, VZS-VZV, WRN-WSR | WRN-WSR |
Eagle | 44 | YM-YN, ZT | EMB-EPA | EMB-EPA |
Kiowa | 45 | YP | WUS-WUU | WUS-WUY |
Cheyenne | 46 | YR | ECM-ECR | ECM-ECT |
Douglas | 47 | YS-YT, GM | EHW-EMA, FGJ0FGZ, VZZ, WVW, DAA-DAU | EHW-EMA |
Archuletta | 48 | YU | FAA-FAL | FAA-FAL |
Rio Blanco | 49 | YV | VVD-VVP | VVD-VVV |
San Miguel | 50 | YX | VZF-VZM | VZF-VZR |
Clear Creek | 51 | YY-YZ | ECU-EDP | ECU-EDU |
Custer | 52 | ZA | EFB-EFE | EFB-EFG |
Grand | 53 | ZB-ZC | EWZ-EXV | EWZ-EYB |
Park | 54 | ZD | VAH-VBA, EWW-EWY, EZX-EZZ, VZX-VZY, WWG-WWJ | VBB-VBR |
San Juan | 55 | ZE | VZB-VZC | VZB-VZE |
Ouray | 56 | ZF | VAA-VAE | VAA-VAG |
Pitkin | 57 | ZG, ZP | VBS-VCX | VBS-VDM |
Dolores | 58 | ZH | EHR-EHT | EHR-EHV |
Jackson | 59 | ZJ | FGC-FGE | FGC-FGH |
Gilpin | 60 | ZK | EWN-EWV | EWN-EWV |
Summit | 61 | ZL, ZR | WNZ-WRJ | WNZ-WRM |
Mineral | 62 | ZM | UMN-UNN | UMN-UNR |
Hinsdale | 63 | ZN | EZD-EZE | EZD-EZE |