In November and December , 1929 , petitions were signed by over 70 per cent of voters to annex Harmon and Mt. Airy , another section to the northeast and adjoining Croton- on - Hudson , as well as a small rural section to the north which was known as Oscawana . The proposi- tion was favorably carried by a public referendum held on June 25 , 1930 , and the annexation became effective July 1 , 1930. Thus was created the present enlarged village of Croton - on - Hudson . Incorporation of Croton - on - Hudson Fifty years ago , on February 12 , 1898 , Croton - on - Hudson was incor- porated as a village under the laws of the State of New York . Previous to this time the community was an unincorporated hamlet . In the spring of 1948 the Croton Lions Club proposed a celebration of the fiftieth anniversary of the incor- poration of the village . It is most Village Management Croton - on - Hudson , a village of approximately 4500 population , is managed by a Mayor and four Trus- tees elected by the people . All per- sonnel , except the Police Justice , are appointed by the Village Board . The personnel of the Village of- fice consists of a Treasurer , a Clerk and a Junior Clerk . The Water Department is com- posed of the Water Superintendent and three assistants . A Chief , Lieutenant and six Pa- trolmen make up the Police De- partment . Elected by the people at the reg- ular village election , the Police Jus- tice serves a four - year term . The Pubic Works Department consists of the Superintendent , a general foreman , three motor - equip- ment operators and eight laborers .