Police Unit Numbering:

City PD
20 - Easton City PD 

East PD
24 - Wilson Borough PD
25 - Forks Twp PD
27 - Palmer Twp PD 

North PD
22 - Tatamy Borough PD
30 - Bangor Borough PD
31 - East Bangor Borough PD
33 - Portland Borough PD
34 - Roseto Borough PD
38 - Washington Twp PD
42 - Northampton Borough PD
47 - Lehigh Township PD
48 - Moore Twp PD
50 - Nazareth Borough PD
51 - Stockertown Borough PD
52 - Bushkill Twp. PD
54 - Upper Nazareth Twp PD
61 - Slate Belt Regional PD

South PD
12 - Freemansburg Borough PD
13 - Hellertown Borough PD
16 - Lower Saucon Twp PD
17 - Bethlehem Twp PD
90 - Colonial Regional PD 

Miscellaneous Units
70 - Pennsylvania Game Commission
71 - Pennsylvania Fish & Boat Commission
80 - Lehigh University Police
83 - Lafayette College Police
91 - Bangor Area School District Police
92 - Northampton County Detectives
93 - Nazareth Area School District Police
94 - Easton Area School District Police
95 - Northampton Area School District Police
98 - Northampton County Corrections (Transport Units)
S  - Northampton County Sheriff's Department
C  - Constables