Tuguegarao was once the only first class municipality in the province of Cagayan.

It began its operations as a 7th class municipality.

Binalonan was a 5th class municipality when Guico took office.

By 1923, the town had grown enough to become a first class municipality.

A 3rd class municipality with population of 33,129.

At present it is classified as a 4th class municipality with an average income of 40,224,656.654 on the period from 2002 to 2006.

Polangui is classified as a first class municipality, having an annual income of at least 55 million or more.

It is a 4th class municipality in terms of income level.

Since this is a 5th class municipality, its economic growth is very slow.

When Mandaue was a second class municipality in 1964 she had a population of 33,811.