Sex offenders are registered on three tiers, Tier 1 (10 years), Tier 2 (25 years) and Tier 3 (lifetime). The Maine Sex Offender registry determines in which tier a sex offender should be registered based on the severity and class of their crime or crimes. The registry is updated daily. The towns listed, with the exception of Skowhegan and Waterville, have enacted ordinances barring sex offenders from being within 750 feet of schools, parks, and areas frequented by children. Skowhegan will vote on such an ordinance at Town Meeting in June, and Waterville is in talks to create such an ordinance.

Auburn

Population: 23,203

Tier 1: 8

Tier 2: 5

Tier 3: 33

Total: 46

Augusta

Population: 18,494

Tier 1: 9

Tier 2: 1

Tier 3: 62

Total: 72

Bangor

Population: 31,985

Tier 1: 25

Tier 2: 2

Tier 3: 90

Total: 112

Biddeford

Population: 21,362

Tier 1: 10

Tier 2: 1

Tier 3: 28

Total: 39

Falmouth

Population: 12,102

Tier 1: 0

Tier 2: 1

Tier 3: 3

Total: 4

Skowhegan

Population: 8,302

Tier 1: 2

Tier 2: 1

Tier 3: 26

Total: 29

South Portland

Population: 25,577

Tier 1: 4

Tier 2: 0

Tier 3: 15

Total: 15

Waterville

Population: 16,406

Tier 1: 8

Tier 2: 3

Tier 3: 35

Total: 46

Sources: Maine Sex Offender Registry

U.S. Census Bureau 2016 population estimates