- Chicago city (msa_sc=15): the population maximum happened in 1950 and started declining till 1990. After 1990, it fluctuates, and the 2020 population is close to the 1990 size.
- Baltimore city (msa_sc=19): the population maximum happened in 1950 and started declining.
- Detroit city (msa_sc=21): the population maximum happened in 1950 and started declining. 2020 population only remains 1/3 of the size in 1950.
- St. Louis city (msa_sc=24): the population maximum happened in 1950 and started declining.
- Cincinnati city (msa_sc=30): the population maximum happened in 1950 and started declining.
- Cleveland city (msa_sc=31): the population maximum happened in 1950 and started declining.
- Toledo city (msa_sc=33): the population maximum happened in 1970 and started declining.
- Philadelphia city (msa_sc=37): the population maximum happened in 1950 and started declining.
- Pittsburgh city (msa_sc=38): the population maximum happened in 1950 and started declining.
- Milwaukee city (msa_sc=50): the population maximum happened in 1960 and started declining.
- Buffalo city (msa_sc=61): the population maximum happened in 1950 and started declining.
- Birmingham city (msa_sc=64): the population maximum happened in 1960 and started declining.
- Rochester city (msa_sc=66): the population maximum happened in 1950 and started declining.
- Akron city (msa_sc=91): the population maximum happened in 1960 and started declining.
- Dayton city (msa_sc=93): the population maximum happened in 1960 and started declining.
- Shreveport city (msa_sc=103): the population maximum happened in 1980 and started declining.
- Mobile city (msa_sc=105): the population maximum happened in 1960 and started declining.
- Jackson City (msa_sc=106): the population maximum happened in 1980 and started declining.