Alright now, here are the 1950's map which was used in 1962 also. These districts are quite uneven especially in 1960. I have the population for these districts in both 1950 when they were created and in 1960.
one look at this map should tell you the smallest district.
the first number is 1950 the second is 1960, yes some districts lost population.
district 1 380,670 283,302
district 2 383,069 483,343
district 3 349,661 427,899
district 4 291,818 366,991
district 5 362,043 461,906
district 6 470,629 623,842
district 7 414,598 664,556
district 8 333,277 398,106
district 9 275,109 312,854
district 10 254,508 308,917
district 11 227,810 240,831
district 12 178,251 177,431
district 13 345,341 268,040
district 14 466,448 462,192
district 15 383,944 337,017
district 16 525,334 803,436
district 17 333,498 512,752
district 18 396,001 690,583
Michigan had a population of 6,371,766 divided by 18 districts should be 353,987 people per district if they were even.
In 1960 Michigan had a population of 7,823,194 and gained a congress seat for 19 districts or 411,747 people a district. The 1962 elections were held under these uneven districts.