1890s – First homes erected.
1902 – Fire Company established as the “Cooperative Fire Company of Cleona.”
1912 – Cleona Elementary School built.
1922 – Center Street railroad built.
1929 – Cleona Borough is incorporated.
1938 – Five acres of land is purchased for a playground on the north side.
1946 – Borough Council appoints “special officers” to police the Borough streets.
1953 – Borough Council buys the old Cleona Elementary School on Penn Avenue
1953 – The zoning ordinance is adopted
1956 – The Police Department is organized.
1965 – Cleona playground moved to South Garfield Street.
1968 – Lebanon Co. Planning began to enforce Borough zoning laws & prepare plans.
1971 – Recycling program began.
1977 – Construction of “Cleona Acres” devel., between S. Garfield St. and Dairy Road.
1987 – Council established the Cleona Borough Sewer Authority.
1987 – Construction began on Walnut Mill Development on South Center Street
1996 – Borough moves into remodeled fire hall.
2004 – North Center Street Bridge closed for 1 year while being replaced.