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

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