Monthly CPS data are not currently being released amidst the U.S. federal government shut down. Once the September 2025 monthly data are available, we will process and release them as quickly as possible via IPUMS.
Codes and Frequencies
Description
Principal/central city code - 2005-2025
Unicon Corporation made the following notes about this variable:
With the introduction of new geographic codes in May 2004, the term central city has been replaced by principal city. Whenever possible this code identifies specific central cities in a CBSA or MSA/PMSA that have multiple central cities. In order to uniquely identify a specific city, this code must be used in combination with the variables cbsa (05+) or msafp (86-04).
Universe
- All households.
Availability
| Years | Jan | Feb | ASEC | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2005 – 2025 | - | - | X | - | - | - | - | - | - | - | - | - |
