Cross Reference of County Codes

Information on both County Code Formats

In 1950 Indiana established County Codes for Car Plates which were designated by 2 letters followed by up to 4 numbers.

So for each pair of letters there would be a maximum of 9,999 plates. A county with less than 9,999 Cars would only need 1 pair of letters.

The system was based on the County with the Largest Number of Registered Autos starting with the letters AA and using as many pairs of letters as needed for their Automobiles.

The 2nd County would start with BB, the 3rd would start with CC and so on.

After a decade of using this system the combinations of Pairs of Letters were running out and the system was getting confusing jumping around in the alphabet to create codes.

There are notes mentioning the letters US being used at Grissom Air Force Base in Miami County and possibly Fort Benjamin Harrison in Indianapolis.

I have also seen charts where RP stood for Republican Party. Since the BMV was always a Political Factor in the State, this could be true.

In 1963 the “1 thru 92” Alphabetized system was established.  1 for Adams, 2 for Allen and 92 for Whitley County.

Following the number of the county was a single letter (typically standing for the BMV Branch within the county) and a possible 9,999 plates per County Number and Branch Letter. Now every County could have as many as 260,000 plates.

It is well known, and still seen today, letters “D” and “R” were used to designate Democrat and Republican. This can be seen in Smaller Counties only needing less than 30,000 plates and they used “A”, “B” and “C”. So why do they have a few plates with “D” and “R” ?  So Political Affiliations can be clearly seen in this manner.

Soon after this system was started Marion County needed additional Numbers so 93 was used so another 260,000 numbers were available,

Then Lake County used 94. Marion County then used 95, Lake County then used 96. Marion rounded off the 97,98 and 99.

Now this system was used up. There was even some double letter used in Allen County for a few years.

Not until versions of letters and numbers seen today would there be enough combinations to suffice.

This is a Cross-Reference between the 1950-1962 system and 1963 system for easy reference.

Indiana County Codes

1 Adams                JA-JC

2 Allen                   DD-DN

3 Bartholomew      ZA-ZB

4 Benton               ND-NF

5 Blackford           ZD-ZE

6 Boone                HA-HB

7 Brown                YE

8 Carroll                QC

9 Cass                  SS-ST

10 Clark                WA-WC

11 Clay                  FA-FB

12 Clinton              XA-XB

13 Crawford          ZG

14 Daviess            XG-XH

15 Dearborn          SG-SH

16 Decatur             LC

17 DeKalb              UA-UC

18 Delaware          JJ-JW

19 Dubois              PF

20 Elkhart              GG-GM, JG

21 Fayette             ZC

22 Floyd                WW-WX

23 Fountain           XJ-XL

24 Franklin            TD

25 Fulton               TC

26 Gibson              NA

27 Grant                NH-NR

28 Greene             MA-MC

29 Hamilton           SA-SB, SF

30 Hancock           UD, UF

31 Harrison            XD

32 Hendricks          EA-EC

33 Henry                QP-QS

34 Howard             PP-PW, PZ

35 Huntington         UT-UV

36 Jackson             SJ-SL

37 Jasper               GF

38 Jay                     LA-LB

39 Jefferson           EJ

40 Jennings            LD

41 Joihnson            KA-KC

42 Knox                  TS-TU

43 Kosciusko          RM, RR-RT

44 Lagrange           YD

45 Lake                  CA-CZ

46 La Porte             LL-LP

47 Lawrence           QA-QB

48 Madison             FF-FL, FN

49 Marion                AA-BA, BM, BR-BY

50 Marshall             YA-YB

51 Martin                 FM

52 Miami                 ZX-ZZ, US

53 Monroe              VV-VY

54 Montgomery       TA

55 Morgan               WF-WG

56 Newton               ME-MF

57 Noble                  PA-PC

58 Ohio                   XE

59 Orange               SE

60 Owen                  KN

61 Parke                  UE

62 Perry                   PY

63 Pike                    QD

64 Porter                 XX-XY

65 Posey                 HC-HD

66 Pulaski                RD

67 Putnam               NC

68 Randolph            YX-YZ

69 Ripley                 SC-SD

70 Rush                   VE-VF

71 St. Joseph          BB-BL, BN

72 Scott                   JD

73 Shelby                RA-RC

74 Spencer              SP

75 Starke                 VJ-VK

76 Steuben              SU

77 Sullivan               YF-YH

78 Switzerland         GD

79 Tippecanoe         MM-MR

80 Tipton                  DC

81 Union                  ED

82 Vanderburgh       EE-EH, EK-EM

83 Vermillion            FC-FD

84 Vigo                     HH-HL

85 Wabash               VA-VB

86 Warren                HE-HF

87 Warrick                JF

88 Washington         WD

89 Wayne                 KJ-KM

90 Wells                   GB-GC

91 White                   MG-MH

92 Whitley                DA-DB

93 Marion

94 Lake

95 Marion

96 Lake

97 Marion

98 Marion

99 Marion

 

 

AA-BA     MARION

BB-BK     ST. JOSEPH

BM          MARION

BN          ST. JOSEPH

BR          MARION

BU          MARION

BX-BZ     MARION

CA-CB    DEARBORN

CC-CZ    LAKE

DA-DB    WHITLEY

DC          TIPTON

DD-DN    ALLEN

EA-EC    HENDRICKS

ED          UNION

EE-EH    VANDERBURGH

EJ           JEFFERSON

EK-EM    VANDERBURGH

FA-FB      CLAY

FC-FD     VERMILLION

FF-FL      MADISON

FM          MARTIN

FN           MADISON

GB-GC    WELLS

GD          SWITZERLAND

GF          JASPER

GG-GM   ELKHART

HA-HB    BOONE

HC-HD    POSEY

HE-HF     WARREN

HH-HM    VIGO

JA-JC      ADAMS

JD           SCOTT

JF           WARRICK

JJ-JN      DELAWARE

KA-KC    JOHNSON

KG-KM    WAYNE

KN           OWEN

LA-LB      JAY

LC           DECATUR

LD           JENNINGS

LL-LP      LA PORTE

MA-MC    GREENE

ME-MF    NEWTON

MG-MH   WHITE

MM-MQ   TIPPECANOE

NA-NB     GIBSON

NC           PUTNAM

ND-NF     BENTON

NH           GRANT

NN-NP     GRANT

NR           GRANT

PA-PC     NOBLE

PF           DUBOIS

PP-PW    HOWARD

PY           PERRY

PZ           HOWARD

QA-QB    LAWRENCE

QC          CARROLL

QD          PIKE

QE          LAWRENCE

QP-QS    HENRY

RA-RC    SHELBY

RD          PULASKI

RM         KOSCIUSKO

RR-RT    KOSCIUSKO

SA-SB    HAMILTON

SC-SD    RIPLEY

SE          ORANGE

SF.          HAMILTON

SG-SH    DEARBORN

SJ-SL      JACKSON

SN           HAMILTON

SP-SQ     SPENCER

SS-ST      CASS

SU            STEUBEN

TA-TB       MONTGOMERY

TC            FULTON

TD            FRANKLIN

TE            FULTON

TS-TU      KNOX

TW           KNOX

UA-UC     DE KALB

UD           HANCOCK

UE           PARKE

UF           HANCOCK

US           MIAMI, Grissom Air Force Base

UT-UV     HUNTINGTON

VA-VB     WABASH

VE-VF     RUSH

VJ-VK      STARKE

VV-VW     MONROE

VY            MONROE

WA-WC    CLARK

WD           WASHINGTON

WE           CLARK

WF-WG    MORGAN

WW-WX    FLOYD

XA-XB       CLINTON

XD             HARRISON

XE             OHIO

XG-XH      DAVIEES

XJ-XL        FOUNTAIN

XV             PORTER

XX-XY       PORTER

YA-YB       MARSHALL

YD            LAGRANGE

YE            BROWN

YF-YH      SULLIVAN

YX-YZ      RANDOLPH

ZA-ZB      BARTHOLOMEW

ZC            FAYETTE

ZD-ZE      BLACKFORD

ZF            BARTHOLOMEW

ZG           CRAWFORD

ZX-ZZ      MIAMI