QUARRY

Coverage / Illinois / Cook

Cook County, IL parcel owner data

1,238,825 parcels with the owner of record. 1,238,825 carry an owner mailing address (100%), and 450,706 of those are absentee — the list investors mail first. Browsing is free and unlimited on the map; one credit turns any owner into a verified phone and email, and only if one comes back.

What a county file actually lands at. 2,346 of these rows (0%) are owned by a government body, a school or water district, a church, a cemetery or an HOA, and every list pull strips them — so a Cook County file arrives at about 1,236,479 mailable rows, not 1,238,825. That is the number to price against.

1,238,825

Parcels

31 named places

450,706

Absentee owners

36% of rows

50,861

Out of state

4% of rows

120,561

LLC / trust owned

10% of rows

Why out-of-state is near zero here. That flag is read from the two-letter state before the ZIP at the end of the mailing address. Cook County publishes most of its mailing addresses without a trailing state and ZIP, so the filter can only confirm 50,861. That is the filter's real answer for this county, not a rounding — an out-of-state pull here will come back nearly empty, and absentee is the flag to use instead.

What Cook County publishes

A county is only as useful as the columns it fills in. This is measured on the rows themselves, not promised: how many of this county's 1,238,825 parcels carry each field.

Field coverage for Cook County
FieldRowsShareCoverageStatus
Parcel numberThe county's own APN, exactly as published.1,238,825100%Complete
Latitude / longitudeParcel centroid. This is what puts the row on the map.1,238,825100%Complete
Owner of recordName as the assessor publishes it, second owner kept where there is one.1,238,825100%Complete
Property addressStreet address of the parcel itself.1,237,992100%Complete
Property ZIPNeeded for a ZIP-scoped pull.1,238,825100%Complete
Owner mailing addressOne line, as published. This is what a mail piece is addressed to.1,238,825100%Complete
Mailing city / state as separate columnsSome counties publish the mailing address split into fields; most publish one line. Absentee and out-of-state are derived either way.00%Not published
AcreageDeeded acres. Absent in Florida and Colorado counties.1,238,825100%Complete
Assessed land valueLand only. There is no improvement or total value, so equity cannot be estimated.1,238,824100%Complete
Land use codeFree text from the county. Missing entirely in Texas and Florida, so a vacant-land filter matches nothing there.361,32129%Sparse

Read this before you filter. Mailing city / state as separate columns, Land use code are under 40% populated in this county. A filter on them silently drops every row that has no value, so a range filter here will return far fewer records than the parcel count suggests.

Not in the record — for any county

  • Sale date, sale price, transfer history
  • Mortgage, lien, foreclosure or tax-delinquent status
  • Equity (there is no total value to subtract from)
  • Year built, square footage, beds and baths
  • Flood, wetlands, landlocked or road-frontage flags
  • Owner phone and email — those are traced on request, never stored on the parcel

Twelve real rows

Drawn deterministically by a hash of each row's own key, so these are the same twelve rows on every render and they spread across the county rather than down one street. Government, school, church and HOA owners are excluded, the way they are in a pull.

Sample parcel rows from Cook County
ParcelOwnerProperty addressOwner mails fromAcresLand valueFlag
03024120080000ARBOR IV LLC100 ARBOR Ct, Wheeling370 W DUNDEE ROAD, WHEELING, IL 600900.3236,576Absentee
03153150010000FLORICEL CIOCOI200 ANDOVER Dr, Wheeling200 ANDOVER DR, PROSPECT HTS, IL 600700.4639,641Owner-occupied
03123001300000AMERITUS HC OWNER LLC430 INLAND Dr, Wheeling121 W WACKER DR 1220, CHICAGO, IL 606010.0754,903Absentee
03171170210000TORRES ALEJO & TORRES CARYN2633 CHAPEL HILL Dr, Wheeling2633 N CHAPEL HILL DR, ARLINGTN HTS, IL 600040.2244,918Absentee
03054090020000NICKEL JEAN B334 STILLWELL Dr, Wheeling334 STILLWELL DRIVE, BUFFALO GROV, IL 600890.1921,440Owner-occupied
03054060100000HARIZANOV ANASTAS645 WHITE PINE Rd, Wheeling645 WHITE PINE RD, BUFFALO GRV, IL 600890.2222,661Owner-occupied
03084140230000SCHUMAKE MATTHEW J577 CARRIAGE WAY Dr, Wheeling577 CARRIAGEWAY DR, BUFFALO GRV, IL 600890.1824,962Absentee
03082130110000CHANDRASEKA MUGHUNDHAN3346 DANIELS Ct, Wheeling3346 N DANIELS CT, ARLNGTON HTS, IL 600040.2031,074Absentee
03043040020000GARAY WILHELMINA153 BERNARD Dr, Wheeling153 BERNARD AVE, BUFFALO GRV, IL 600890.1519,060Owner-occupied
03103160110000NALEPA ANTHONY T1090 KINGSPORT Dr, Wheeling1090 KINGSPORT DR, WHEELING, IL 600900.1830,214Owner-occupied
03103010170000ORIOLE PETER837 VERA Ln, Wheeling837 VERA LANE, WHEELING, IL 600900.7031,995Owner-occupied
03092150240000KUPERBERG YAKOV7 UNIVERSITY Dr, Wheeling7 UNIVERSITY CT, BUFFALO GROV, IL 600890.2029,271Owner-occupied

Public record data as published by the county. Phone and email are never shown here; they are resolved per owner, on request, with a right-party score.

What you can do with Cook County owner data

Pull every absentee owner in a ZIP and export the mailing addresses for a direct-mail campaign. Draw a box around a subdivision on the map and skip-trace the whole block in one job. Look up who owns the lot next to a listing, then call them with a scored number instead of sending a letter that gets thrown away.

Where the data comes from

Parcel boundaries, owner of record and mailing addresses are public records maintained by the county assessor or GIS office. Quarry pulls them from the county's own published services and refreshes on the county's cycle; the counts on this page were measured 2026-09-09. Phone and email come from the skip-trace engine, cross-checked across sources and scored, and you are only charged when a contact is found.