Cook County Block and Lot (Illinois)

The Recorder of Deeds ensures the accuracy of Cook County property, land, and property tax records for the Cook County, Illinois government. As part of this job, they keep real estate documents including information on Cook County block and lot divisions. Cook County Recorders provide online access to a searchable block and lot database that can identify the parcel number of any Cook County property by its address. Block and lot information, which covers both urban and suburban areas, can show subdivided lots, lot identifiers, and the tracts of land Cook County, IL. The Registrar of Deeds may also provide Cook County plat maps and property maps that show block and lot information.

Cook County Recorder of Deeds Chicago IL 118 North Clark Street 60602 312-603-5050


The Cook County Clerk Office stores important public records for the Cook County local government, including records related to Cook County property such as block and lot information. These records can include plat maps, property maps, and block and lot databases, and they show parcel numbers, subdivisions within a lot, tracts of land, and lot identifiers in Cook County, IL. They may also include other descriptions of the property for both urban and suburban areas. Clerk Offices in Cook County provide online tools to look up the block and lot information for any property by its address.

Arlington Heights Clerk Arlington Heights IL 33 South Arlington Heights Road 60005 847-368-5540

Barrington Hills Village Clerk Barrington IL 112 Algonquin Road 60010 224-484-8418

Calumet City Clerk Calumet IL 204 Pulaski Road 60409 708-891-8110

Chicago City Clerk Chicago IL 5674 South Archer Avenue, Unit A 60638 312-745-1100

Cook Coounty Clerk Maywood IL 1500 Maybrook Drive, Ste 235 60153 708-865-6040

Cook County Clerk Chicago IL 69 West Washington Street 60602 312-603-0996

Cook County Clerk Rolling Meadows IL 2121 Euclid Avenue 60008 847-818-2850

Des Plaines City Clerk Des Plaines IL 1420 Miner Street, Ste 100 60016 847-391-5310

Elk Grove Village Clerk Elk Grove IL 901 Wellington Avenue 60007 847-357-4040

Evanston City Clerk Evanston IL 2100 Ridge Avenue, # 1200 60201 847-866-2925

Franklin Park Village Clerk Franklin Park IL 9500 Belmont Avenue 60131 847-671-8242

Hickory Hills Clerks Hickory Hills IL 8652 95th Street 60457 708-598-4800

La Grange Village Clerk La Grange IL 53 South La Grange Road 60525 708-579-2316

The Building Department is responsible for creating and enforcing Cook County building codes and zoning regulations in order to ensure the construction of safe buildings. As part of that job, Cook County Building Departments maintain a number of property-related records, including documents on block and lot information. These records can include plat maps, property maps, and Cook County block and lot databases, and they provide parcel numbers, subdivisions within a lot, lot identifiers, and tracts of land. Building Departments in Cook County, Illinois may provide access to an online, searchable database to identify blocks, lots, and parcel numbers for properties, which can also show zoning boundaries.

Barrington Hills Building Department Barrington IL 112 Algonquin Road 60010 224-484-8418

Bellwood Building Department Bellwood IL 3200 Washington Boulevard 60104 708-547-3513

Blue Island Building Department Blue Island IL 13051 Greenwood Avenue 60406 708-597-8606

Bridgeview Building Department Bridgeview IL 7500 South Oketo Avenue 60455 708-924-8025

Broadview Village Building Department Broadview IL 2350 South 25th Avenue 60155 708-345-8174

Buffalo Grove Building Department Buffalo Grove IL 50 Raupp Boulevard 60089 847-459-2530

Buffalo Grove Planning Department Buffalo Grove IL 50 Raupp Boulevard 60089 847-459-2518

Burbank City Building Department Burbank IL 6530 West 79th Street, Ste 2 60459 708-599-5500

Calumet City Building Department Calumet IL 670 Wentworth Avenue 60409 708-891-8206

Chicago Building Department Chicago IL 120 North Racine Avenue 60607 312-743-9000

Chicago Heights Zoning Chicago Heights IL 1601 Chicago Road 60411 708-756-5323

Chicago Permits Chicago IL 121 North LaSalle Drive, Rm 1000 60602 312-744-3449

Chicago Planning Department Chicago IL 121 North LaSalle Street, Rm 501 60602 312-744-4190

Chicago Zoning Chicago IL 121 North LaSalle Drive, Rm 905 60602 312-744-3508

Cook County Zoning Markham IL 16501 Kedzie Avenue 60428 708-596-8000

Cook County Zoning Bridgeview IL 10220 South 76th Avenue, Rm 64 60455 708-974-6266

Cook County Zoning Chicago IL 69 West Washington Street, Ste 2840 60602 312-603-0540

Countryside Building Department Countryside IL 5550 East Avenue 60525 708-354-1860

Des Plaines City Building Department Des Plaines IL 1420 Miner Street, Ste 100 60016 847-391-5380

Elk Grove Village Permits Elk Grove IL 901 Wellington Avenue 60007 847-357-4220

Evanston Building Department Evanston IL 2100 Ridge Avenue 60201 847-866-2934

Evanston Permits Evanston IL 2100 Ridge Avenue, # 1700 60201 847-866-2969

Evanston Planning Department Evanston IL 2100 Ridge Avenue 60201 847-866-2931

Evergreen Park Building Department Evergreen Park IL 9418 South Kedzie Avenue 60805 708-229-3335

Franklin Zoning Franklin Park IL 9500 Belmont Ave 60131 847-671-8239

Harvey Building Department Harvey IL 15320 Broadway Avenue 60426 708-210-5300

Hickory Hills City Zoning Hickory Hills IL 8652 95th Street 60457 708-598-4800

Homewood Permits Homewood IL 2020 Chestnut Road 60430 708-206-3858

Homewood Village Building Department and Zoning Homewood IL 2020 Chestnut Road, # 2 60430 708-206-3385

Illinois Planning Department Chicago IL 233 South Wacker Drive, Ste 800 60606 312-454-0400


The Assessor Office determines the value of taxable property within a Cook County or local area. These property assessments are used to calculate property taxes in Cook County, Illinois. Assessors keep detailed information on Cook County block and lot divisions, and many provide an online, searchable database to identify blocks, lots, and parcel numbers for properties by address. Urban and suburban block and lot information includes parcel numbers, subdivisions in a lot, and all tracts of land in the area. Assessor Offices may also have Cook County property maps known as plat maps that show block and lot information.

Bremen Township Assessor Oak Forest IL 15350 Oak Park Avenue 60452 708-687-8220

Cook County Assessor Markham IL 16501 Kedzie Avenue, Ste 219 60428 708-232-4100

Cook County Assessor Maywood IL 1500 Maybrook Drive, Ste 082 60153 708-865-6032

Cook County Assessor's Office Chicago IL 118 North Clark Street 60602 312-603-5300

Evanston Township Assessor Evanston IL 846 Dodge Avenue 60202 847-332-2465

Hanover Township Assessor Bartlett IL 250 Illinois 59 60103 630-837-0301