Geographic Components

Some Census data sets (ACS, in particular) include a code called geographic component. This is a two-character code that indicates that portion of an area that meets a location-based test such as "in a metropolitan area" or "in a rural place". Generally these codes are available only for counties, states, and larger areas.

The Census Bureau doesn't publish a master list of all geographic component codes, but MCDC has compiled a complete list of all the ones we know about. Component codes used in ACS data products are shown in boldface. This list is also available in Excel format.

Geographic component code	Description
00	Not a geographic component
01	Urban
04	Urban — in urbanized area
05	Urban — in urbanized area of 5,000,000 or more population
06	Urban — in urbanized area of 2,500,000 to 4,999,999 population
07	Urban — in urbanized area of 1,000,000 to 2,499,999 population
08	Urban — in urbanized area of 500,000 to 999,999 population
09	Urban — in urbanized area of 250,000 to 499,999 population
10	Urban — in urbanized area of 100,000 to 249,999 population
11	Urban — in urbanized area of 50,000 to 99,999 population
28	Urban — in urban cluster
29	Urban — in urban cluster of 25,000 to 49,999 population
30	Urban — in urban cluster of 10,000 to 24,999 population
31	Urban — in urban cluster of 5,000 to 9,999 population
32	Urban — in urban cluster of 2,500 to 4,999 population
43	Rural
44	Rural — place
45	Rural — place of 2,500 or more population
46	Rural — place of 1,000 to 2,499 population
47	Rural — place of less than 1,000 population
48	Rural — not in place
49	Rural — farm
50	Urban portion of extended place
51	Rural portion of extended place
89	American Indian Reservation and Trust Land — Federal
90	American Indian Reservation and Trust Land — State
91	Oklahoma Tribal Statistical Area
92	Tribal Designated Statistical Area
93	Alaska Native Village Statistical Area
94	State Designated Tribal Statistical Area
95	Hawaiian Home Land
A0	In metropolitan or micropolitan statistical area
A1	In metropolitan or micropolitan statistical area — in principal city
A2	In metropolitan or micropolitan statistical area — not in principal city
A3	In metropolitan or micropolitan statistical area — urban
A4	In metropolitan or micropolitan statistical area — urban — in urbanized area
A5	In metropolitan or micropolitan statistical area — urban — in urban cluster
A6	In metropolitan or micropolitan statistical area — rural
A7	In metropolitan or micropolitan statistical area of 5,000,000 or more population
A8	In metropolitan or micropolitan statistical area of 2,500,000 to 4,999,999 population
A9	In metropolitan or micropolitan statistical area of 1,000,000 to 2,499,999 population
AA	In metropolitan or micropolitan statistical area of 500,000 to 999,999 population
AB	In metropolitan or micropolitan statistical area of 250,000 to 499,999 population
AC	In metropolitan or micropolitan statistical area of 100,000 to 249,999 population
AD	In metropolitan or micropolitan statistical area of 50,000 to 99,999 population
AE	In metropolitan or micropolitan statistical area of 25,000 to 49,999 population
AF	In metropolitan or micropolitan statistical area of less than 25,000 population
C0	In metropolitan statistical area
C1	In metropolitan statistical area — in principal city
C2	In metropolitan statistical area — not in principal city
C3	In metropolitan statistical area — urban
C4	In metropolitan statistical area — urban — in urbanized area
C5	In metropolitan statistical area — urban — in urban cluster
C6	In metropolitan statistical area — rural
C7	In metropolitan statistical area of 5,000,000 or more population
C8	In metropolitan statistical area of 2,500,000 to 4,999,999 population
C9	In metropolitan statistical area of 1,000,000 to 2,499,999 population
CA	In metropolitan statistical area of 500,000 to 999,999 population
CB	In metropolitan statistical area of 250,000 to 499,999 population
CC	In metropolitan statistical area of 100,000 to 249,999 population
CD	In metropolitan statistical area of less than 100,000 population
CE	In metropolitan statistical area of 5,000,000 or more population — in principal city
CF	In metropolitan statistical area of 5,000,000 or more population — not in principal city
CG	In metropolitan statistical area of 2,500,000 to 4,999,999 population — in principal city
CH	In metropolitan statistical area of 2,500,000 to 4,999,999 population — not in principal city
CJ	In metropolitan statistical area of 1,000,000 to 2,499,999 population — in principal city
CK	In metropolitan statistical area of 1,000,000 to 2,499,999 population — not in principal city
CL	In metropolitan statistical area of 500,000 to 999,999 population — in principal city
CM	In metropolitan statistical area of 500,000 to 999,999 population — not in principal city
CN	In metropolitan statistical area of 250,000 to 499,999 population — in principal city
CP	In metropolitan statistical area of 250,000 to 499,999 population — not in principal city
CQ	In metropolitan statistical area of 100,000 to 249,999 population — in principal city
CR	In metropolitan statistical area of 100,000 to 249,999 population — not in principal city
CS	In metropolitan statistical area of less than 100,000 population — in principal city
CT	In metropolitan statistical area of less than 100,000 population — not in principal city
E0	In micropolitan statistical area
E1	In micropolitan statistical area — in principal city
E2	In micropolitan statistical area — not in principal city
E3	In micropolitan statistical area — urban
E4	In micropolitan statistical area — urban — in urbanized area
E5	In micropolitan statistical area — urban — in urban cluster
E6	In micropolitan statistical area — rural
E7	In micropolitan statistical area of 100,000 or more population
E8	In micropolitan statistical area of 50,000 to 99,999 population
E9	In micropolitan statistical area of 25,000 to 49,999 population
EA	In micropolitan statistical area of less than 25,000 population
EB	In micropolitan statistical area of 100,000 or more population — in principal city
EC	In micropolitan statistical area of 100,000 or more population — not in principal city
ED	In micropolitan statistical area of 50,000 to 99,999 population — in principal city
EE	In micropolitan statistical area of 50,000 to 99,999 population — not in principal city
EF	In micropolitan statistical area of 25,000 to 49,999 population — in principal city
EG	In micropolitan statistical area of 25,000 to 49,999 population — not in principal city
EH	In micropolitan statistical area of less than 25,000 population — in principal city
EJ	In micropolitan statistical area of less than 25,000 population — not in principal city
G0	Not in metropolitan or micropolitan statistical area
G1	Not in metropolitan or micropolitan statistical area — urban
G2	Not in metropolitan or micropolitan statistical area — urban — in urbanized area
G3	Not in metropolitan or micropolitan statistical area — urban — in urban cluster
G4	Not in metropolitan or micropolitan statistical area — rural
H0	Not in metropolitan statistical area
H1	Not in metropolitan statistical area — urban
H2	Not in metropolitan statistical area — urban — in urbanized area
H3	Not in metropolitan statistical area — urban — in urban cluster
H4	Not in metropolitan statistical area — rural
J0	In combined statistical area
L0	Not in combined statistical area
M0	In New England city and town area
M1	In New England city and town area — in principal city
M2	In New England city and town area — not in principal city
M3	In New England city and town area — urban
M4	In New England city and town area — urban — in urbanized area
M5	In New England city and town area — urban — in urban cluster
M6	In New England city and town area — rural
P0	In combined New England city and town area