46 attribute fields, profiled from the May 2022 vintage.
Columns in Delaware County
| Field | Type | Filled | Distinct | Example values |
|---|---|---|---|---|
| PARCEL_ID | OFTString | 17.6k | 290010001100, 290010001500, 290120001700 | |
| SITUS | OFTString | 9.7k | 2851 HWY 13, 2843 STATE HWY 13, 2957 STATE HWY 13 | |
| ADDR_NUMBE | OFTString | 3.6k | 2851, 2843, 2957 | |
| STREET_PRE | OFTString | 8 | HWY, STATE HWY, STATE HWY | |
| STREET_NAM | OFTString | 426 | 13, 13, 13 | |
| STREET_SUF | OFTString | 5 | SW, SW, SW | |
| STREET_TYP | OFTString | 13 | Ave, Ave, Ave | |
| SITUS_CITY | OFTString | 18 | MANCHESTER, MASONVILLE, MASONVILLE | |
| SITUS_ZIP | OFTString | 18 | 52057, 50654, 50654 | |
| ADDR_SEC_U | OFTString | 51 | UNIT 2126, UNIT 2126, UNIT 1008 | |
| OWNER | OFTString | 9.5k | Garner Robert R & Susan B Declaration of Trust, Cook Donald A & Karen M, McDowell Robert W Revocable Trust | |
| LAND_USE_C | OFTString | 5 | A, R, R | |
| LAND_US_01 | OFTString | 4 | Agricultural, Residential, Residential | |
| LAND_COVER | OFTString | 15.9k | {"22": 6, "23": 2, "24": 2, "81": 6, "82": 1462}, {"22": 36, "23": 36, "81": 237, "82": 816}, {"21": 36, "22": 137, "31": 173, "81": 209, "82": 184} | |
| CROP_COVER | OFTString | 14.0k | {"1": 0.47, "5": 2.54, "176": 3.53}, {"1": 0.69, "36": 0.39, "176": 1.45}, {"1": 137.4, "5": 5.36, "176": 7.62, "195": 0.21} | |
| MUNI_ID | OFTInteger64 | 16 | 467373, 467373, 467373 | |
| SCHOOL_DIS | OFTInteger64 | 7 | 1930900, 1930900, 1930900 | |
| ACREAGE | OFTReal | 3.8k | 77.97, 0.0, 0.0 | |
| ZIP_CODE | OFTString | 16 | 52330, 52330, 52330 | |
| TAX_DIST | OFTString | 247 | ADAMS WEST DELAWARE FD 11, ADAMS WEST DELAWARE FD 11, ADAMS WEST DELAWARE FD 11 | |
| BUILDINGS | OFTInteger64 | 42 | 1, 2, 2 | |
| LEGAL_DESC | OFTString | 15.0k | N 1/2 SE EX RD, S.540' E.506' SE NE, TRACT 278' X 736.2' PT SE NE & NE SE | |
| PLSS_SECTI | OFTString | 36 | 01, 01, 12 | |
| PLSS_TOWNS | OFTString | 4 | 87N, 87N, 87N | |
| PLSS_RANGE | OFTString | 5 | 6W, 6W, 6W | |
| MAIL_ADDRE | OFTString | 7.7k | 109 5th Ave Court, 2843 State Hwy 13, 20788 262nd St | |
| MAIL_AD_01 | OFTString | 1.2k | Coggon IA 52218, Ryan IA 52330-, Delhi IA 52223 | |
| MAIL_NAME | OFTString | 9.5k | Garner, Robert R & Susan B Declaration of Trust, Cook, Donald A & Karen M, McDowell, Robert W Revocable Trust | |
| OWNER_OCCU | OFTString | 3 | F, T, F | |
| USPS_RESID | OFTString | 3 | ?, ?, ? | |
| CENSUS_TRA | OFTInteger64 | 4 | 950400, 950400, 950400 | |
| CENSUS_BLK | OFTInteger | 6 | 4, 4, 4 | |
| CENSUS_BLO | OFTInteger | 818 | 4025, 4025, 4026 | |
| ZONING | OFTString | 3 | Not Applicable, Not Applicable, Not Applicable | |
| AREA_METER | OFTReal | 17.6k | 314645.760159652, 26457.9991061309, 16864.8798820759 | |
| FLD_ZONE | OFTString | 18 | {A}, {A}, {A} | |
| ZONE_SUBTY | OFTString | 14 | {NULL}, {NULL}, {NULL} | |
| PLACE_GNIS | OFTInteger64 | 12 | 2396463, 2396463, 2396463 | |
| ALT_ID_1 | OFTString | 17.6k | 290010001100, 290010001500, 290120001700 | |
| ELEVATION | OFTString | 17.6k | {"max": 292.08349609375, "min": 273.0, "mean": 279.1859375} | |
| ROBUST_ID | OFTString | 17.6k | AABKbxN6X7A5kpFw, AABKbxJdtW6B9Xmy, AABKb30mVBHO7cKc | |
| CALC_ACREA | OFTReal | 17.6k | 77.7521137930516, 6.53803615911601, 4.16748046765978 | |
| COUNTY_NAM | OFTString | 1 | Delaware, Delaware, Delaware | |
| COUNTY_FIP | OFTInteger64 | 1 | 19055, 19055, 19055 | |
| STATE_ABBR | OFTString | 1 | IA, IA, IA | |
| CTY_ROW_ID | OFTInteger64 | 17.6k | 8474, 8476, 8552 |
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.