Northwest Commission Share: Community Organizations Northwest Commission Visit Website 395 Seneca St Oil City, PA 16301 (814) 677-4800 (814) 677-7663 (fax) About Map About The Northwest Commission is a Local Development District serving an eight-county region of Northwest Pennsylvania, and provides various programs and services to local governments. What's Nearby? Distance: 5 10 15 20 25 50 mi.