Montgomery County is a suburb of Philadelphia and consequently, many of its residents work in the city.
However, Montco is also a major employment center with large business parks in Blue Bell, Lansdale, Fort Washington, Horsham, and King of Prussia which attract thousands of workers from all over the region.
The strong job base and taxes generated by those jobs have resulted in Montgomery County receiving the highest credit rating of 'AAA' from Standard & Poor's, one of fewer than 30 counties in the United States with such a rating.
In 2012, Moody's downgraded the general obligation rating to Aa1, and in 2018 the rating was revised back to Aaa.

Major employers include:
Abington Hospital–Jefferson Health
Abington School District
ABM Industries
ACTS Retirement-Life Communities
Aetna
Arcadia University
Giant
GlaxoSmithKline
Hatfield Quality Meats
Hatboro-Horsham School District
Holy Redeemer Health System
Janssen
Lockheed Martin
Lower Merion School District
King of Prussia
Main Line Health
McNeil Consumer Healthcare
Merck
Montgomery County Community College
Motorola Mobility
Norristown Area School District
North Penn School District
Pfizer
Prudential
Quaker Chemical
Quest Diagnostics
SEI Investments Company
Souderton Area School District
Spring-Ford Area School District
Montgomery County is a suburb of Philadelphia and consequently, many of its residents work in the city. However, Montco is also a major employment center with large business parks in Blue Bell, Lansdale, Fort Washington, Horsham, and King of Prussia which attract thousands of workers from all over the region. The strong job base and taxes generated by those jobs have resulted in Montgomery County receiving the highest credit rating of 'AAA' from Standard & Poor's, one of fewer than 30 counties in the United States with such a rating. In 2012, Moody's downgraded the general obligation rating to Aa1, and in 2018 the rating was revised back to Aaa.
Major employers include:
Abington Hospital–Jefferson Health
Abington School District
ABM Industries
ACTS Retirement-Life Communities
Aetna
Arcadia University
Giant
GlaxoSmithKline
Hatfield Quality Meats
Hatboro-Horsham School District
Holy Redeemer Health System
Janssen
Lockheed Martin
Lower Merion School District
King of Prussia
Main Line Health
McNeil Consumer Healthcare
Merck
Montgomery County Community College
Motorola Mobility
Norristown Area School District
North Penn School District
Pfizer
Prudential
Quaker Chemical
Quest Diagnostics
SEI Investments Company
Souderton Area School District
Spring-Ford Area School District
Montgomery County, Pennsylvania