26 attribute fields, profiled from the September 2022 vintage.
Columns in Franklin County
| Field | Type | Filled | Distinct | Example values |
|---|---|---|---|---|
| objectid | OFTInteger | 31.3k | 284, 479, 1138 | |
| gis_acreag | OFTReal | 2.4k | 80.0, 70.09, 101.12 | |
| gis_altern | OFTString | 30.7k | 10-31-300-002, 10-31-300-004, 10-31-100-004 | |
| gis_parcel | OFTString | 30.6k | 1031300002, 1031300004, 1031100004 | |
| tsc_parcel | OFTString | 30.6k | 1031300002, 1031300004, 1031100004 | |
| tsc_owner1 | OFTString | 18.8k | SOUTHERN ILLINOIS HARVEST LLC, CHAMNESS JAMES, CHAMNESS JAMES A | |
| tsc_owne_1 | OFTString | 17.0k | 5810 CANARY RD PINCKNEYVILLE IL 62274, 454 ELKVILLE BLACKTOP ROYALTON IL 62983, 454 ELKVILLE BLACKTOP ROYALTON IL 62983 | |
| tsc_owner2 | OFTString | 9.6k | CHAMNESS JOHN, CHAMNESS JOHN, JOHN W CHAMNESS REVOCABLE TRUST | |
| tsc_owne_2 | OFTString | 8.5k | 454 ELKVILLE BLACKTOP ROYALTON IL 62983, 454 ELKVILLE BLACKTOP ROYALTON IL 62983, 711 WALNUT RD ROYALTON IL 62983 | |
| tsc_site_a | OFTString | 19.9k | 928 LONSPUR LANE ROYALTON IL 62983, 528 WALNUT ROAD ROYALTON IL 62983, 795 LONSPUR RD ROYALTON IL 62983 | |
| tsc_gross_ | OFTReal | 2.5k | 80.0, 70.09, 101.12 | |
| tsc_legal_ | OFTString | 29.7k | SEC 31 TWP 07 RNG 01 S 1/2 SW, SEC 32 TWP 07 RNG 01 SW SE, SEC 31 TWP 07 RNG 01 SW SE | |
| tsc_docume | OFTString | 20.5k | 2014-5288, 2018--1107, 2018--1107 | |
| tsc_class | OFTString | 14 | 0021, 0021, 0021 | |
| homesite_a | OFTReal | 232 | 0.0, 0.0, 0.0 | |
| farm_acrea | OFTReal | 2.8k | 80.0, 70.09, 101.12 | |
| tsc_tax_co | OFTString | 67 | 71200, 71200, 71200 | |
| tsc_townsh | OFTString | 12 | SIX MILE, SIX MILE, SIX MILE | |
| tsc_farm_l | OFTReal | 2.8k | 19425.0, 16385.0, 26890.0 | |
| tsc_farm_b | OFTReal | 594 | 0.0, 0.0, 0.0 | |
| tsc_non_fa | OFTReal | 2.0k | 0.0, 0.0, 0.0 | |
| tsc_non__1 | OFTReal | 7.4k | 0.0, 0.0, 0.0 | |
| tsc_tax_bi | OFTReal | 18.8k | 860.36, 726.26, 1231.26 | |
| tsc_exempt | OFTString | 9 | Owner Occupied Exemption, Owner Occupied Exemption, Owner Occupied Exemption | |
| shape__are | OFTReal | 30.9k | 513965.382812, 453299.257812, 662968.324219 | |
| shape__len | OFTReal | 31.3k | 3003.90998, 2844.539297, 3972.026045 |
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.