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56,681 columns in the coverage ledger · read from /api/field-coverage on citytap-prod · source last observed Oct 10, 2026, 10:16 PM
3,026 datasets, 56,681 catalogued fields, 0 of them still unread. Every band below is a share of that, worst first. Open one to see its datasets.
Freshness above is about the data being current. This is about the data being understood: how many of the catalogue's fields carry a meaning we can act on, which datasets are still waiting, and how far the joinable web reaches.
Filtered to datasets carrying zip. Clear
| Dataset | Fields | Decided | Understood | Nobody looked | Shared terms | |
|---|---|---|---|---|---|---|
| 2016 - 2017 School Safety Report rear-wh5i | 38 | 38 100% | 9 | 0 | 5 | See every field |
| OpenData_ParksProperties ghu2-eden | 36 | 36 100% | 7 | 0 | 2 | See every field |
| NYC Condom Availability Program - HIV condom distribution locations 4kpn-sezh | 35 | 35 100% | 7 | 0 | 2 | See every field |
| Mayor’s Office to End Domestic and Gender-Based Violence Resource Directory 5ziv-wcy4 | 35 | 35 100% | 8 | 0 | 5 | See every field |
| Multi Agency Response to Community Hotspot (MARCH) Inspections b84a-xy2t | 35 | 35 100% | 2 | 0 | 2 | See every field |
| Housing Maintenance Code Violations NYCHA properties im9z-53hg | 35 | 35 100% | 16 | 0 | 7 | See every field |
| LinkNYC Kiosk Status n6c5-95xh | 35 | 35 100% | 15 | 0 | 3 | See every field |
| LinkNYC Kiosk Status (Historical) quxm-hmyr | 35 | 35 100% | 17 | 0 | 7 | See every field |
| DOHMH Childcare Center Inspections (Historical) dsg6-ifza | 34 | 34 100% | 14 | 0 | 3 | See every field |
| 2010 - 2016 School Safety Report qybk-bjjc | 34 | 34 100% | 13 | 0 | 4 | See every field |
| LinkNYC New Site Permit Applications xp25-gxux | 34 | 34 100% | 14 | 0 | 4 | See every field |
| NYC Wi-Fi Hotspot Locations yjub-udmw | 34 | 34 100% | 15 | 0 | 5 | See every field |
| Parks Properties enfh-gkve | 33 | 33 100% | 7 | 0 | 2 | See every field |
| Street Seats (2014 - 2019) d83i-6us7 | 32 | 32 100% | 15 | 0 | 5 | See every field |
| Handyman Work Order (HWO) Charges sbnd-xujn | 32 | 32 100% | 17 | 0 | 4 | See every field |
| TLC Authorized Behind The Wheel Providers (Historical) auuc-fqzi | 31 | 31 100% | 11 | 0 | 4 | See every field |
| Issued Licenses w7w3-xahh | 31 | 31 100% | 15 | 0 | 5 | See every field |
| New York City Locations Providing Seasonal Flu Vaccinations w9ei-idxz | 31 | 31 100% | 4 | 0 | 1 | See every field |
| layer_1 3as9-uee8 | 30 | 30 100% | 15 | 0 | 5 | See every field |
| 2019 Pre-Kindergarten Admissions Guide fp78-wt5b | 30 | 30 100% | 19 | 0 | 6 | See every field |
| Advertised Lotteries on Housing Connect By Building nibs-na6y | 30 | 30 100% | 12 | 0 | 4 | See every field |
| Board of Standards and Appeals (BSA) Applications Status yvxd-uipr | 30 | 30 100% | 13 | 0 | 5 | See every field |
| Street Seats (2021 - 2024) 5ar6-qxhs | 29 | 29 100% | 17 | 0 | 7 | See every field |
| Local Law 7-2018 Qualified Transactions 8wi4-bsy4 | 29 | 29 100% | 11 | 0 | 6 | See every field |
| Speculation Watch List adax-9mit | 29 | 29 100% | 12 | 0 | 6 | See every field |
| Sidewalk Dismissal Inspection Tracking p4u2-3jgx | 29 | 29 100% | 8 | 0 | 4 | See every field |
| TLC Driver Education 24 Hour Course Providers wzur-rhz9 | 29 | 29 100% | 13 | 0 | 7 | See every field |
| Latin Cultural Organizations 799n-b76v | 28 | 28 100% | 10 | 0 | 4 | See every field |
| Financial Empowerment Centers dt2z-amuf | 28 | 28 100% | 13 | 0 | 5 | See every field |
| DOHMH Health Map - Hepatitis nk7g-qeep | 28 | 28 100% | 12 | 0 | 7 | See every field |
| LinkNYC Kiosk Locations s4kf-3yrf | 28 | 28 100% | 13 | 0 | 5 | See every field |
| TLC Authorized Wheelchair Passenger Assistance Training Providers ayeb-p4mv | 27 | 27 100% | 11 | 0 | 7 | See every field |
| Fee Charges cp6j-7bjj | 27 | 27 100% | 14 | 0 | 4 | See every field |
| GreenThumb Garden Info p78i-pat6 | 27 | 27 100% | 9 | 0 | 4 | See every field |
| 421-a(16) Affordable New York Housing Program Completion Extension - Letters of Intent pq4c-wbq4 | 27 | 27 100% | 13 | 0 | 2 | See every field |
| NYCHA Residential Addresses 3ub5-4ph8 | 26 | 26 100% | 9 | 0 | 5 | See every field |
| Older Adult Center (OAC) Activities fzy4-e84j | 26 | 26 100% | 12 | 0 | 6 | See every field |
| Universal Pre-K (UPK) School Locations kiyv-ks3f | 26 | 26 100% | 15 | 0 | 3 | See every field |
| Register of Community Board Budget Requests vn4m-mk4t | 26 | 26 100% | 12 | 0 | 7 | See every field |
| Electronics Drop Off Locations in NYC wshr-5vic | 26 | 26 100% | 12 | 0 | 8 | See every field |
| Capacity Supporting Transportable Classroom Units (TCU) Removals 32rn-zwi7 | 25 | 25 100% | 15 | 0 | 8 | See every field |
| DOHMH School Cafeteria Inspections (2020-Present) 5ery-qagt | 25 | 25 100% | 14 | 0 | 5 | See every field |
| Active Projects Under Construction 8586-3zfm | 25 | 25 100% | 14 | 0 | 7 | See every field |
| LinkNYC Kiosk Status (Archived) 8s5k-n45n | 25 | 25 100% | 8 | 0 | 4 | See every field |
| Capacity Projects by School a94k-kjys | 25 | 25 100% | 9 | 0 | 6 | See every field |
| Voting/Poll Sites mifw-tguq | 25 | 25 100% | 5 | 0 | 3 | See every field |
| 485-x Affordable Neighborhoods for New Yorkers: Registrations of Prospective Applicants for Tax Benefits rrtd-iyd7 | 25 | 25 100% | 13 | 0 | 4 | See every field |
| Housing Litigations 59kj-x8nc | 24 | 24 100% | 11 | 0 | 4 | See every field |
| LinkNYC_OpenData_9_6_2016_SP83 5mv6-f76y | 24 | 24 100% | 14 | 0 | 2 | See every field |
| Equitable Health Systems - Health Insurance Enrollment gfej-by6h | 24 | 24 100% | 10 | 0 | 6 | See every field |
A line means a dataset carries a field tagged with a shared vocabulary term. Two datasets on the same term speak the same language about it, which is what makes a cross-dataset question possible. Sharing a term is not the same as a working join — the dataset page says whether a specific pair compiles.
Bipartite. A dimension node is a conformed-dimension family; a dataset node is a catalog dataset; an edge means that dataset carries at least one column tagged with that dimension, and names the columns that carry it.
How many of an edge's tagging columns carry a method that actually read something. Zero means the edge rests entirely on carried lexical tags.
Two datasets on the same dimension node share a vocabulary, which is weaker than a join. GET /api/datasets/{fourFour}/bindings/{partner} decides whether a specific pair compiles; executing it additionally needs both marts present.
Gaps in the data behind this page
Source last observed Oct 10, 2026, 10:16 PM.
603 of the 3,026 datasets in the catalog list no columns at all.
603 / 3,026
Source: /api/field-coverage
Check it yourself: /api/field-coverage#/catalog/datasets_no_inventory
These pages state their own gaps: /datasets, /freshness, /scorecard, /scorecard/fields, /analyses, /ontology, /graph, /alerts, any topic page under /domains.