Erie County (ERI)
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Wyoming
York
| Year |
Total stations |
Mobiles | Portables | Rovers |
% of grand total |
County total |
| 1987 | 40 | 5 | 0 | 0 | 12.39% | 1,372,903 |
| 1988 | 21 | 2 | 0 | 0 | 4.07% | 431,945 |
| 1989 | 22 | 2 | 0 | 0 | 4.19% | 412,846 |
| 1990 | 33 | 2 | 0 | 0 | 2.20% | 281,879 |
| 1991 | 32 | 4 | 0 | 0 | 4.00% | 463,191 |
| 1992 | 28 | 5 | 0 | 0 | 5.73% | 610,726 |
| 1993 | 35 | 4 | 0 | 0 | 4.96% | 501,974 |
| 1994 | 36 | 0 | 0 | 0 | 6.14% | 852,612 |
| 1995 | 33 | 0 | 0 | 0 | 7.38% | 1,061,366 |
| 1996 | 30 | 1 | 0 | 0 | 6.66% | 947,931 |
| 1997 | 22 | 1 | 0 | 0 | 5.22% | 727,585 |
| 1998 | 23 | 1 | 0 | 1 | 5.07% | 846,477 |
| 1999 | 18 | 1 | 0 | 0 | 5.30% | 788,195 |
| 2000 | 16 | 0 | 0 | 0 | 4.69% | 686,240 |
| 2001 | 20 | 0 | 0 | 0 | 7.12% | 1,108,302 |
| 2002 | 12 | 1 | 0 | 1 | 3.76% | 663,507 |
| 2003 | 9 | 0 | 0 | 1 | 4.51% | 632,966 |
| 2004 | 11 | 1 | 0 | 0 | 5.86% | 674,454 |
| 2005 | 8 | 0 | 0 | 0 | 3.36% | 432,216 |
| 2006 | 10 | 0 | 0 | 0 | 5.48% | 598,960 |
| 2007 | 9 | 0 | 0 | 0 | 5.73% | 594,182 |