Allegheny County voters who requested mail-in ballots should start receiving them this week, county officials said Monday.

Voters will also be able to cast ballots through the over-the-counter voting option at several locations.

Oct. 20 is the last day to register to vote — or to update voter registration information — before the Nov. 4 general election.

Voters who requested mail-in ballots will be able to drop them off at ballot return sites from 11 a.m.-7 p.m. Friday, Oct. 31 and Monday, Nov. 3; and from 9 a.m.-5 p.m. Saturday and Sunday, Nov. 1 and 2 at the following locations:

  • County Office Building at 542 Forbes Ave. in Downtown Pittsburgh
  • Allegheny County Emergency Services Building at 150 Hookstown Grade Road
  • Boyce Park Four Seasons Lodge
  • Carnegie Public Library — Squirrel Hill
  • North Park Ice Rink
  • South Park Ice Rink
  • Dormont Pool
  • Community College of Allegheny County — Homewood
  • Greater Pittsburgh Food Bank
  • Avalon Public Library

Voters can also drop off mail-in ballots at the County Office Building on Election Day until 8 p.m.

Satellite voting spots, or over-the-counter voting sites — where voters can request a ballot, fill it in on the spot and return it to county elections division staff on site — will be available from 10 a.m.-2 p.m. Saturday and Sunday, Oct. 25 and 26 at the following locations:

  • Community College of Allegheny County — Homewood
  • North Park Ice Rink
  • South Park Ice Rink

Starting Wednesday, the County Office Building will be open on weekdays for over-the-counter voting from 8:30 a.m.-4:30 p.m. through Oct. 28.