U.S. Justice Department: Does Neighborhood Watch reduce crime? Neighborhood Watch programs became popular in the 1970s and 1980s; by 2000, roughly 40% of the U.S. residential population was covered by such citizen crime-watching programs.
Definition of actuarial. 1  1 : of or relating to actuaries. 2  2 : relating to statistical calculation especially of life expectancy.
Actuarial Tables. Section 7520 of the Internal Revenue Code requires the use of a set of actuarial tables for valuing annuities, life estates, remainders, and reversions, for all purposes under Title 26 except for certain purposes stated in the statute or provided by regulation.