Comparison starts with context.41 cities available · automatic hourly checks

COMPARE CITIES / WITH CONTEXT

Same word.
Different system.

Explore what communities publish, where their categories overlap, and where the definitions are too different for a fair ranking.

THE GOAL IS UNDERSTANDING—NOT A SCOREBOARD.
30/41 cities publish this lensRAW COUNTS · NOT RATES
FILTER THE LENS LIBRARY
COMPARABILITY SIGNALUSE WITH LIMITS
Closer conceptual overlap

Where is the conceptual overlap strongest?

Both sources publish a robbery category. Counting rules, reporting practices, dates, and city populations still differ, so the raw totals are descriptive rather than a fair rate comparison.

New York

New York City

Live check

Published term · Robbery

6,397raw published complaints
Period
June 30, 2026
System
NYPD complaint data
What it counts
Reported robbery complaints in the current complaint file.
Open official source ↗
California

San José

Live check

Published term · Robbery

538raw published offenses
Period
2026 year to date
System
SJPD NIBRS Group A
What it counts
NIBRS robbery offense counts published by SJPD.
Open official source ↗
01 / WHAT YOU CAN SAY

“These are the raw counts each source published.”

You can name the source term, unit, period, and geography. You can explore patterns within each city using its local page.

02 / WHAT YOU CANNOT SAY

“One community is safer because its number is smaller.”

That conclusion would require compatible definitions, equivalent coverage, reliable population denominators, and aligned reporting periods.

UNDER THE NUMBERS

Compare the systems.

The record model explains why two familiar category names can produce very different totals.

QuestionNew York CitySan José
What is one record?

One row per valid complaint record in the current year-to-date file.

NIBRS offense counts. A single incident can contain multiple offenses and connected victims.

What is included?

Felony, misdemeanor, and violation crimes reported to NYPD for complete published quarters.

Group A offenses in SJPD’s public district dashboard, including records assigned to “Other” geography.

What geography is mapped?

Geocoded records are assigned to NYC Planning Neighborhood Tabulation Areas; shooting records remain a separate source.

Official San José City Council districts 1–10; unmatched geography is retained as “Other” outside the map.

How fresh is it?

NYC publishes the complaint file quarterly; this site checks the source hourly.

SJPD updates the public dashboard; this site checks it hourly.

How should I use it locally?

Use the NYC explorer to compare neighborhood areas inside the same source and reporting period.

Use the San José explorer to compare council districts inside the same source and reporting period.

RETURN TO YOUR COMMUNITY

Comparison is the doorway—not the conclusion.

BUILT TO GROW

A standard for every city we add.

New cities enter the tool through one comparison profile. Missing or incompatible measures stay visibly unavailable instead of being estimated.

01

Source first

An official, linkable public source with a documented owner and refresh schedule.

02

Define the unit

Complaint, incident, offense, victim, arrest, and call-for-service records are never silently combined.

03

Align the period

Every value carries its own reporting end date. Partial periods remain visibly partial.

04

Respect geography

Neighborhood, district, precinct, and citywide values keep their original geographic meaning.

05

Gate rates

Per-capita comparison remains unavailable until compatible counts and trustworthy denominators exist.

06

Show the limits

Every metric receives a comparability signal and an explanation people can read before the total.

A COMMUNITY READING GUIDE

Ask better questions.

A useful comparison begins by asking what happened locally, how it was recorded, and what the source can actually support. It does not begin by declaring a winner.

Four questions before repeating a number

1. What is the unit? A complaint, incident, offense, victim, arrest, and call for service answer different questions.

2. What is the period? Compare the source end dates before interpreting a difference.

3. What is the geography? Raw district or neighborhood counts do not account for population, land use, visitors, or exposure.

4. What can I do locally? Return to the city explorer, examine patterns inside one consistent system, and use the official source for deeper context.