25 attribute fields, profiled from the May 2023 vintage.
Columns in Montgomery County
| Field | Type | Filled | Distinct | Example values |
|---|---|---|---|---|
| parcel_id | OFTString | 50.0k | 010000001007, 010000004004, 010000007001 | |
| pid | OFTString | 50.0k | 01-00-00001-00-7, 01-00-00004-00-4, 01-00-00007-00-1 | |
| alt_pid | OFTString | 50.0k | 01035 199, 01035 198, 01035 197 | |
| owner | OFTString | 50.0k | GOMEZ AMY L, PUTNEY H A CHRISTINE, SMITH NANCY M | |
| mail_addr1 | OFTString | 50.0k | 204 ANDERSON LN, 208 ANDERSON LN, 212 ANDERSON LN | |
| mail_addr2 | OFTString | 1.9k | JOHN M BARNUM, KRISTY MCGARVEY, SAL PASCERI | |
| mail_addr3 | OFTString | 1.1k | PO BOX 370, PO BOX 370, BLDG 18 STE 50 | |
| mail_addr4 | OFTString | 5.4k | AMBLER PA 19002 3502, AMBLER PA 19002, AMBLER PA 19002 | |
| situs | OFTString | 50.0k | 204 ANDERSON LN, 208 ANDERSON LN, 212 ANDERSON LN | |
| acreage | OFTString | 37.5k | 5040 SF, 5000 SF, 5000 SF | |
| muni | OFTString | 45 | AMBLER, AMBLER, AMBLER | |
| class | OFTString | 290 | 1101, 1101, 1101 | |
| class_des | OFTString | 290 | R - SINGLE FAMILY, R - SINGLE FAMILY, R - SINGLE FAMILY | |
| objectid | OFTInteger | 50.0k | 202361, 202919, 202499 | |
| taxpin | OFTString | 50.0k | 010000001007, 010000004004, 010000007001 | |
| alternatei | OFTString | 50.0k | 01035 199, 01035 198, 01035 197 | |
| parceltype | OFTString | 7 | BASE PARCEL, BASE PARCEL, BASE PARCEL | |
| calcacreag | OFTReal | 50.0k | 0.12207113, 0.12488871, 0.11537234 | |
| truecalcul | OFTReal | 50.0k | 0.12207102, 0.12488876, 0.11537238 | |
| created_us | OFTString | 4 | JCLEMENTI, JCLEMENTI, JCLEMENTI | |
| created_da | OFTString | 297 | 2021-04-30, 2021-04-30, 2022-04-13 | |
| last_edite | OFTString | 4 | RWILSON, RWILSON, RWILSON | |
| last_edi_1 | OFTString | 423 | 2021-05-24, 2021-05-24, 2021-05-24 | |
| starea() | OFTReal | 50.0k | 5317.41388746114, 5440.15443813732, 5025.6210749924 | |
| stlength() | OFTReal | 50.0k | 299.288790769955, 301.704528667645, 292.317312834656 |
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.