| ZIPN | 2004 ZIP code (numeric) |
| ZIPA | 2004 ZIP code (alpha with leading zeros) |
| RUCA2 | RUCA 2.0 code (e.g., 10.3 or 4.0) |
| ZIPTYP | ZIP Type (1=residential (30,096), 2= commercial (11,832)) |
| PARZIP | Residential ZIP if “2” for RUCA Type (ZIPTYP) -- if ZIP is commercial this field holds the parent numeric residential ZIP code in which it is located; if ZIP is residential it contains the same ZIP as in ZIPN |
| LINF1 | Flag indicating that linear distance between the ZIP and the nearest edge of a 1 was used because roads did not directly connect the two ZIP population centroids (e.g., islands, ferries, not roads for remote places in Alaska etc.) (1= yes (312) , 2= no (25,120), -1= NA (16,496) ). NAs are ZIP codes with RUCA codes of 1.0 and 1.1. |
| LINF4 | Flag indicating that linear distance between the ZIP and the nearest edge of a 4 was used because roads did not directly connect the two ZIP population centroids (e.g., islands, ferries, not roads for remote places in Alaska etc.) (1= yes (231) , 2= no (22,471), -1= NA (19,226) ). NAs are ZIP codes with RUCA codes of 1.0, 1.1, 4.0, 4.1, and 4.2). |
| TTIM1A | Road travel time to nearest Urbanized Area: (0=0, 1=1-29, 2=30-44, 3=45-59, 4=60-74, 5=75-89, 6=90 and longer) (if it was necessary to use linear distance, each mile is considered a minute of travel time) (see Data: Travel Distance and Time section). Travel time for RUCA codes 1.0 and 1.1 are assigned a zero. |
| TTIM4A | Road travel time to nearest large Urban Cluster: (10,000-49,999) (0=0, 1=1-29, 2=30-44, 3=45-59, 4=60-74, 5=75-89, 6=90 and longer) (if it was necessary to use linear distance, each mile is considered a minute of travel time) (see Data: Travel Distance and Time section) (-1= Not Applicable for RUCA ZIP codes 1.0 and 1.1) |
| FASTA | Road travel time is faster to the fastest travel Urbanized Area than to the fastest travel Census Bureau defined large Urban Cluster: (1= Urbanized Area (25,932) , 2= large Urban Cluster--10,000-49,999 population (15,996) ) |
| TDIS1A | Road travel distance to nearest Urbanized Area: (0=0, 1=1-29, 2=30-44, 3=45-59, 4=60-74, 5=75-89, 6=90 and farther) (if it was necessary to use linear distance, linear distance was substituted) (see Data: Travel Distance and Time section). Travel distance for RUCA codes 1.0 and 1.1 are assigned a zero. |
| TDIS4A | Road travel distance to nearest large Urban Cluster (10,000-49,999): (0=0, 1=1-29, 2=30-44, 3=45-59, 4=60-74, 5=75-89, 6=90 and farther) (if it was necessary to use linear distance, linear distance was substituted) (see Data: Travel Distance and Time section) (-1=Not Applicable for RUCA ZIP codes 1.0 and 1.1) |
| SHORTA | Road travel distance is shorter to the closest Urbanized Area than to the closest Census Bureau defined Urban Cluster: (1= Urbanized Area (26,129) , 2= large Urban Cluster--10,000-49,999 population (15,799) ) |
| TTIM1B | Road travel time to nearest Urbanized Area: (0=0, 1=1-29, 2=30-44, 3=45-59, 4=60-74, 5=75-89, 6=90 and longer) (if it was necessary to use linear distance, each mile is considered a minute of travel time plus 60 minutes – for waits and travel time on ferries, planes etc.) (see Data: Travel Distance and Time section). Travel time for RUCA codes 1.0 and 1.1 are assigned a zero. |
| TTIM4B | Road travel time to nearest large Urban Cluster (10,000-49,999): 0=0, 1=1-29, 2=30-44, 3=45-59, 4=60-74, 5=75-89, 6=90 and longer) (if it was necessary to use linear distance, each mile is considered a minute of travel time plus 60 minutes – for waits and travel time on ferries, planes etc.) (see Data: Travel Distance and Time section) (-1= Not Applicable for RUCA ZIP codes 1.0 and 1.1) |
| FASTB | Road travel time is faster to the fastest travel Urbanized Area than to the fastest travel Census Bureau defined large Urban Cluster: (1=Urbanized Area, 2= large Urban Cluster--10,000-49,999) |
| TDIS1B | Road travel distance to nearest Urbanized Area: (0=0, 1=1-29, 2=30-44, 3=45-59, 4=60-74, 5=75-89, 6=90 and farther) (if it was necessary to use linear distance, linear distance is substituted for travel distance plus 75 miles – for waits and travel time on ferries, planes etc.) (see Data: Travel Distance and Time section). Travel distance for RUCA codes 1.0 and 1.1 are assigned a zero. |
| TDIS4B | Road travel distance to nearest large Urban Cluster (10,000-49,999): (0=0, 1=1-29, 2=30-44, 3=45-59, 4=60-74, 5=75-89, 6=90 and farther) (if it was necessary to use linear distance, linear distance is substituted for travel distance plus 75 miles – for waits and travel time on ferries, planes etc.) (see Data: Travel Distance and Time section) (-1=Not Applicable for RUCA ZIP codes 1.0 and 1.1) |
| SHORTB | Road travel distance is shorter to the closest Urbanized Area than to the closest Census Bureau defined large Urban Cluster: (1= Urbanized Area ) , 2= large Urban Cluster--10,000-49,999 population) |
| UP1SZ | This variable is not yet available – coming soon (-9s in column) 2000 population of largest work commuting Census Bureau defined Urbanized Area or Urban Cluster destination (primary flow): (0=0, 1=1-2,499; 2=2,500-4,999; 3=5,000-9,999; 4=10,000-19,999; 5=20,000-29,999; 6=30,000-49,999; 7=50,000-99,999; 8=100,000-249,999; 9=250,000-499,999; 10=500,000-999,999; 11=1,000,000-1,999,999; 12=2,000,000 and higher) (see Data: Urbanized Area and Urban Cluster Populations section) |
| UP2SZ | This variable is not yet available – coming soon (-9s in column) 2000 population of second to largest work commuting Census Bureau defined Urbanized Area or Urban Cluster destination (secondary flow): (0=0, 1=1-2,499; 2=2,500-4,999; 3=5,000-9,999; 4=10,000-19,999; 5=20,000-29,999; 6=30,000-49,999; 7=50,000-99,999; 8=100,000-249,999; 9=250,000-499,999; 10=500,000-999,999; 11=1,000,000-1,999,999; 12=2,000,000 and higher) (see Data: Urbanized Area and Urban Cluster Populations section) |
| FIPSST | State FIPS code where majority of population of the ZIP resides |
| STATE | State alpha two-digit state abbreviation where the majority of the population resides (e.g., CA= 2,717) . USPS state abbreviations. |
| MST | Flag that indicates whether a ZIP crosses a state boundary and the alpha two-digit state abbreviation of the overlapping state ( there are 6 ). Otherwise the field is blank. |
| UUSZ | This variable is not yet available – coming soon (-9s in column) 2000 population of the Census Bureau defined urban unit (i.e., Urbanized Area, Urban Cluster, and Census Rural if less than place of 2,500) in which the ZIP code resides (approximated from Census tracts): (1=<2,500; 2=2,500-4,999; 3=5,000-9,999; 4=10,000-19,999; 5=20,000-29,999; 6=30,000-49,999; 7=50,000-99,999; 8=100,000-249,999; 9=250,000-499,999; 10=500,000-999,999; 11=1,000,000-1,999,999; 12=2,000,000 and higher) (see Data: Urbanized Area and Urban Cluster Populations section) |
| UTYP | This variable is not yet available – coming soon (-9s in column) 2000 Census Bureau defined type of ZIP Code (approximated from Census tracts): (1=Urbanized Area, 2=Urban Cluster, 3=Other – places not in towns of 2500 or more called Rural by the Census Bureau) |
| ZIPPOP | 2004 population estimate: (1=zero, 2=1-99, 3=100-499, 4=500-999, 1000 and higher) – commercial ZIPs will always show zero population (2004 populations estimates provided by Claritas Inc.). In addition, 152 other ZIP code areas have a population estimate of zero. |
| AK: 283 | AL: 842 | AR: 709 | AZ: 518 | CA: 2717 |
| CO: 659 | CT: 440 | DC: 262 | DE: 98 | FL: 1488 |
| GA: 977 | HI: 141 | IA: 1066 | ID: 330 | IL: 1588 |
| IN: 988 | KS: 769 | KY: 1010 | LA: 724 | MA: 713 |
| MD: 627 | ME: 519 | MI: 1168 | MN: 1039 | MO: 1181 |
| MS: 537 | MT: 408 | NC: 1091 | ND: 411 | NE: 620 |
| NH: 297 | NJ: 739 | NM: 429 | NV: 231 | NY: 2222 |
| OH: 1454 | OK: 775 | OR: 486 | PA: 2212 | RI: 91 |
| SC: 540 | SD: 399 | TN: 804 | TX: 2672 | UT: 348 |
| VA: 1265 | VT: 312 | WA: 733 | WI: 905 | WV: 895 |
| WY: 196 | PR: under construction | |||