Northampton County (NHA)
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Wyoming
York
| Year |
Total stations |
Mobiles | Portables | Rovers |
% of grand total |
County total |
| 1987 | 18 | 0 | 0 | 0 | 5.23% | 579,758 |
| 1988 | 19 | 2 | 0 | 0 | 4.64% | 492,327 |
| 1989 | 33 | 5 | 0 | 0 | 5.79% | 569,603 |
| 1990 | 35 | 4 | 0 | 0 | 7.42% | 952,402 |
| 1991 | 26 | 6 | 0 | 0 | 6.24% | 721,729 |
| 1992 | 29 | 3 | 2 | 0 | 7.20% | 767,465 |
| 1993 | 32 | 4 | 0 | 0 | 6.04% | 611,009 |
| 1994 | 33 | 1 | 1 | 0 | 7.30% | 1,013,572 |
| 1995 | 30 | 3 | 0 | 0 | 5.46% | 784,187 |
| 1996 | 26 | 3 | 1 | 0 | 7.72% | 1,099,899 |
| 1997 | 21 | 4 | 0 | 1 | 2.90% | 404,380 |
| 1998 | 20 | 5 | 0 | 0 | 5.28% | 881,988 |
| 1999 | 15 | 3 | 0 | 0 | 5.36% | 797,041 |
| 2000 | 17 | 1 | 1 | 0 | 2.83% | 414,676 |
| 2001 | 21 | 2 | 1 | 0 | 3.52% | 547,454 |
| 2002 | 12 | 1 | 0 | 0 | 5.51% | 971,933 |
| 2003 | 13 | 2 | 0 | 0 | 2.17% | 304,577 |
| 2004 | 19 | 3 | 0 | 0 | 4.79% | 551,568 |
| 2005 | 10 | 0 | 0 | 0 | 3.04% | 391,185 |
| 2006 | 12 | 0 | 0 | 0 | 1.90% | 207,547 |
| 2007 | 10 | 0 | 0 | 0 | 2.42% | 250,599 |