20 attribute fields, profiled from the October 2022 vintage.
Columns in Jersey County
| Field | Type | Filled | Distinct | Example values |
|---|---|---|---|---|
| objectid | OFTInteger | 14.7k | 101, 126, 12303 | |
| gis_parcel | OFTString | 14.6k | 1521101003, 1520202002, 1521300006 | |
| devnet_par | OFTString | 14.5k | 01-271-011-00, 01-270-010-00, 01-271-004-50 | |
| devnet_alt | OFTString | 14.5k | 0127101100, 0127001000, 0127100450 | |
| tsc_parcel | OFTString | 14.5k | 1521101003, 1520202002, 1521300006 | |
| tsc_townsh | OFTString | 11 | Elsah Township, Elsah Township, Elsah Township | |
| tsc_site_a | OFTString | 10.5k | E CAMPUS RD ELSAH IL 62028, W CAMPUS RD ELSAH IL 62028, EDGECLIFF RD ELSAH IL 62028 | |
| tsc_gross_ | OFTReal | 2.7k | 244.0, 138.0, 0.0 | |
| tsc_homesi | OFTReal | 287 | 0.0, 0.0, 0.0 | |
| tsc_farm_a | OFTReal | 2.3k | 0.0, 0.0, 0.0 | |
| tsc_lot_di | OFTString | 3.1k | 26.65X143 90X140AV, SEE SURVEY FOR LOT SIZE, 20X100 | |
| tsc_owner1 | OFTString | 10.4k | THE PRINCIPIA CAMPUS, THE PRINCIPIA CAMPUS, THE PRINCIPIA HUTCHINSON HALL | |
| tsc_owne_1 | OFTString | 10.9k | E CAMPUS RD ELSAH IL 62028, W CAMPUS RD ELSAH IL 62028, EDGECLIFF RD ELSAH IL 620280000 | |
| tsc_owner2 | OFTString | 782 | BOOTH RICHARD T & CAROLYN P, CAGLE JOHN BLAKE-CP, AUGENBAUGH EMILY-CP | |
| tsc_owne_2 | OFTString | 802 | 26459 LAKEVIEW TERRACE GODFREY IL 62035, 11257 SHORT ST DOW IL 62022, 26515 MAIN ST DOW IL 62022 | |
| tsc_mailto | OFTString | 9.7k | THE PRINCIPIA, THE PRINCIPIA, THE PRINCIPIA | |
| tsc_mail_1 | OFTString | 9.0k | 13201 CLAYTON RD ST LOUIS MO 631311099, 13201 CLAYTON RD ST LOUIS MO 63131, 13201 CLAYTON RD ST LOUIS MO 63131 | |
| tsc_legal_ | OFTString | 14.0k | W1/2 NORTH OF HWY 100W (244 ACS - CAMPUS) WORKOUT CENTER, TRACT IN S PT NW1/4 SW1/4 PRESIDENT'S QUARTERS, PT SE1/4. (152.43 ACRES) | |
| shape__are | OFTReal | 14.4k | 1684156.042969, 1108136.582031, 1892.042969 | |
| shape__len | OFTReal | 14.5k | 6663.20645, 5822.799422, 175.178136 |
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.