McHenry County, IL parcel owner data
211,501 parcels with the owner of record. 211,155 carry an owner mailing address (100%), and 71,879 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. 470 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 McHenry County file arrives at about 211,031 mailable rows, not 211,501. That is the number to price against.
211,501
Parcels
84 named places
71,879
Absentee owners
34% of rows
1,430
Out of state
1% of rows
66,472
LLC / trust owned
31% 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. McHenry County publishes most of its mailing addresses without a trailing state and ZIP, so the filter can only confirm 1,430. 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 McHenry 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 211,501 parcels carry each field.
| Field | Rows | Share | Coverage | Status |
|---|---|---|---|---|
| Parcel numberThe county's own APN, exactly as published. | 211,501 | 100% | Complete | |
| Latitude / longitudeParcel centroid. This is what puts the row on the map. | 211,500 | 100% | Complete | |
| Owner of recordName as the assessor publishes it, second owner kept where there is one. | 211,501 | 100% | Complete | |
| Property addressStreet address of the parcel itself. | 211,399 | 100% | Complete | |
| Property ZIPNeeded for a ZIP-scoped pull. | 203,231 | 96% | Complete | |
| Owner mailing addressOne line, as published. This is what a mail piece is addressed to. | 211,155 | 100% | 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. | 149,586 | 71% | Complete | |
| AcreageDeeded acres. Absent in Florida and Colorado counties. | 61,562 | 29% | Sparse | |
| Assessed land valueLand only. There is no improvement or total value, so equity cannot be estimated. | 61,562 | 29% | Sparse | |
| Land use codeFree text from the county. Missing entirely in Texas and Florida, so a vacant-land filter matches nothing there. | 211,501 | 100% | Complete |
Read this before you filter. Acreage, Assessed land value 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.
| Parcel | Owner | Property address | Owner mails from | Acres | Land value | Flag |
|---|---|---|---|---|---|---|
| 11-25-452-007 | JACKSON DAWN C | 859 WOODLAND Ln, Marengo | 859 WOODLAND LN MARENGO IL 60152 | 0.22 | 80,322 | Owner-occupied |
| 01-32-401-001 | STATELINE INVSTMNTS LLC | 6406 WHITE OAKS Rd, Chemung | 22 N AYER ST HARVARD IL 60033 | 10.73 | 101,507 | Absentee |
| 10-32-331-071 | NETTLETON DEVELOP LLC | LILY LAKE Rd, McHenry | P O BOX 307 GENOA CITY WI 53128 | 0.06 | 690 | Absentee |
| 15-05-234-017 | JEFFREY S TINA M ASMUS | 134 HIGHLAND Dr, Nunda | 134 HIGHLAND DR LAKEMOOR IL 60051 | 0.10 | 44,471 | Owner-occupied |
| 11-25-316-004 | CJ WOODS PROP LLC | 417 5TH Ave, Marengo | 906 DEWEY ST HARVARD IL 60033 | 0.20 | 45,991 | Absentee |
| 16-01-153-022 | AUKES MJ TR AUKES MH TR | 645 LINDA Ct, Riley | 645 LINDA CT MARENGO IL 60152 | 0.33 | 109,469 | Owner-occupied |
| 11-23-400-022 | HARMS PA TR HARMS PR TR | RIVER Rd, Marengo | 405 W FOREST ST MARENGO IL 60152 | 19.01 | 6,347 | Absentee |
| 01-35-306-006 | MEDLEY J MCDOWELL D | 704 W WASHINGTON St, Chemung | 704 W WASHINGTON ST HARVARD IL 600332633 | 0.20 | 66,543 | Owner-occupied |
| 06-02-300-001 | HANSEN DECL OF TR | 22111 AIRPORT Rd, Dunham | 5119 N IL RT 47 WOODSTOCK IL 600988535 | 78.30 | 59,584 | Absentee |
| 01-35-338-002 | ALVAREZ EVERARDO JR | 504 W WASHINGTON St, Chemung | 504 W WASHINGTON ST HARVARD IL 60033 | 0.20 | 55,249 | Owner-occupied |
| 16-01-129-012 | JAMES W JUDITH M TR ANDREWS | 610 BAUMAN St, Riley | 610 BAUMAN ST MARENGO IL 601523556 | 0.23 | 98,699 | Owner-occupied |
| 15-06-251-001 | IL DEPT OF CONSERVATION | NA, Nunda | DIVISION OF REALTY ONE NATURAL RESOURCES WAY S | 36.57 | 0 | Absentee |
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 McHenry 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.