What township am I in?

A township is the layer of Illinois government most people never look up, and it is the one that assesses your house. Outside Chicago, township government runs property assessment, general assistance and — in most townships — the roads that no city or county maintains. This names the 220 officials the Cook County Clerk publishes for its 29 townships.

Or open the map and pick your location on it:

Opens the map with the township layer on. Search your address or ZIP, or tap your location.

What the lookup shows

Township, city and county are three different governments

They overlap and none contains the others. A township can hold several municipalities and parts of others; Chicago sits in no township at all, which is why the card is blank inside the city. Your property assessment comes from the township assessor, your street repair from whichever of the three actually owns the road, and your ballot carries all three.

Township halls

Where to ask, for each of the 29 townships in the roster. The telephone number and the mailbox belong to the hall, not to any one officeholder: the county publishes one shared line per township, often a staff member's, so this site never prints it beside a person's name.

Where the names come from

The Cook County Clerk's directory of elected officials, re-read on a schedule and landing as a reviewed pull request. A township the directory does not name keeps its identity card and nobody is filled in.

Who holds each township office

All 220 elected officials in Cook County's townships, as this site had them on September 11, 2026. The map above reads the same roster, so a card and this table cannot disagree — but a table is a claim about a day, and this one names its day. Where the roster names nobody it says so rather than guessing. Where these names come from.

Related lookups

• What district am I in?Every district that covers one point in Illinois, and who represents you there.
• Who is my county board member?The government a township sits inside.
• New York CityThe same lookup, 5 boroughs.