Population by Households by Congressional District
| District Number | Total Families
1990 | Married Couples 1990 | Male-Headed
Households 1990 | Female-Headed Households 1990 |
| | 3176451 |
2547386 | 136995 | 492070 |
| 1 | 133376 |
69815 | 10560 | 53001 |
| 2 | 128356 |
70880 | 9424 | 48052 |
| 3 | 147697 |
111746 | 7958 | 27993 |
| 4 | 161364 |
135234 | 5586 | 20544 |
| 5 | 146377 |
124277 | 5795 | 16305 |
| 6 | 156099 |
128705 | 7182 | 20212 |
| 7 | 151021 |
126765 | 5600 | 18656 |
| 8 | 153441 |
132129 | 5575 | 15737 |
| 9 | 157324 |
133051 | 6000 | 18273 |
| 10 | 153820 |
127070 | 6611 | 20139 |
| 11 | 154162 |
124913 | 6729 | 22520 |
| 12 | 156001 |
130330 | 5841 | 19830 |
| 13 | 151327 |
129830 | 4704 | 16793 |
| 14 | 142229 |
101994 | 6730 | 33505 |
| 15 | 154695 |
129201 | 6323 | 19171 |
| 16 | 148956 |
127137 | 5495 | 16324 |
| 17 | 154605 |
128116 | 6720 | 19769 |
| 18 | 159361 |
127590 | 6386 | 25385 |
| 19 | 155925 |
133629 | 5679 | 16617 |
| 20 | 159763 |
132285 | 5941 | 21537 |
| 21 | 150552 |
122689 | 6156 | 21707 |
Source: U.S. Census Bureau: Census of Population and Housing, Summary Tape Files 1 and 3
Prepared by: The Pennsylvania State Data Center, Penn State Harrisburg