33 attribute fields, profiled from the November 2022 vintage.
Columns in Knox County
| Field | Type | Filled | Distinct | Example values |
|---|---|---|---|---|
| parcelid | OFTString | 33.0k | 1732457002, 1731400002, 1731400005 | |
| objectid | OFTInteger | 33.3k | 274, 284, 306 | |
| twp_name | OFTString | 23 | INDIAN POINT, INDIAN POINT, INDIAN POINT | |
| site_addr | OFTString | 21.7k | 99 S KNOX RD, 48 IL RTE 116, 35 W KNOX RD | |
| site_csz | OFTString | 37 | ST AUGUSTINE IL 61474, ST AUGUSTINE IL 61474, ST AUGUSTINE IL 61474 | |
| gross_ac | OFTReal | 4.3k | 6.18, 20.0, 3.87 | |
| home_ac | OFTReal | 937 | 0.0, 0.0, 3.87 | |
| farm_ac | OFTReal | 4.1k | 6.18, 20.0, 0.0 | |
| class | OFTString | 25 | 0021, 0021, 0040 | |
| taxcode | OFTString | 152 | 0001, 0001, 0001 | |
| lot_dimens | OFTString | 2.7k | .77 ACS, .33 ACS, .30 ACS | |
| non_farm_l | OFTReal | 2.0k | 0.0, 0.0, 7620.0 | |
| non_farm_b | OFTReal | 7.0k | 0.0, 0.0, 31910.0 | |
| farm_land | OFTReal | 4.1k | 2380.0, 5660.0, 0.0 | |
| farm_bldg | OFTReal | 928 | 0.0, 0.0, 0.0 | |
| owner1_nam | OFTString | 22.4k | OYLER CLARENCE & CHRISTINE, SHAW ROY E JR TRUSTEE, BOYS S MIKE & KATRINA J | |
| owner1_add | OFTString | 20.1k | 94 SOUTH CLAY ST, 1008 STATE HIGHWAY 116, 99 S KNOX RD | |
| owner1_a_1 | OFTString | 1.7k | BOX 93, BOX 93, BOX 93 | |
| owner1_csz | OFTString | 1.9k | ST AUGUSTINE IL 61474, ROSEVILLE IL 61473, ST AUGUSTINE IL 61474 | |
| owner2_nam | OFTString | 33 | TAYLOR FREDERIC L, MOTTAZ JEFFREY G & KAREN S ETAL, CBI BANK & TRUST D/B/A F&M BANK | |
| owner2_add | OFTString | 33 | SARAH T BEAL EXECUTOR, 2394 IL RTE 8, 21 EAST MAIN ST | |
| owner2_a_1 | OFTString | 14 | 1323 BILLIT WAY DRIVE, PO BOX 1208, PO BOX 440 | |
| owner2_csz | OFTString | 23 | HOUSTON TX 77094, ELMWOOD IL 61529, GALESBURG IL 614021208 | |
| legal | OFTString | 32.2k | PT W 1/2 SE LOT 8, S 1/4 W 1/2 SE S31 T9 R1., GOEHL S D LOT 1 | |
| sale_notes | OFTString | 3.1k | NO-PTAX, NO-PTAX, UND 1/2 INT | |
| sale_date | OFTString | 4.4k | 2010-03-25, 2006-02-15, 2010-03-25 | |
| sale_type | OFTString | 38 | DINT, WD, DINT | |
| document_n | OFTString | 16.6k | 979848, 3342213, 979848 | |
| document_b | OFTString | 13 | 0000, 0000, 0000 | |
| document_p | OFTString | 9 | 000, 000, 000 | |
| document_t | OFTString | 27 | DINT, DINT, WD | |
| starea() | OFTReal | 33.2k | 325430.760829018, 872186.930934809, 160281.139751698 | |
| stlength() | OFTReal | 33.2k | 2478.77161263235, 3963.83240589566, 2290.82955161245 |
Why this differs from the next county over
There is no national parcel schema. Every assessor's office built its own, usually decades ago, usually inside whatever CAMA system it bought at the time. One county's owner column is OWNER_NAME, the next one's is own1, and a third splits it across four fields. Shapefile's ten-character DBF limit truncated a generation of them into things like TOTLNDVAL.
Nothing here is renamed or remapped. The columns above are exactly what is in the file, because a normalisation layer that quietly guesses wrong is worse than no normalisation at all — and every guess it makes is one you cannot audit.
The Filled column is the share of rows with a real value. Placeholder text such as n/a counts as empty; a column that is 100% present but 90% placeholder is a column that will disappoint you, and the profiler treats it accordingly.