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ChatGPT Use by U.S. Metro Area

Which U.S. cities use AI the most? The answer is surprising — and it comes with an important caveat about data. The most rigorous source, Microsoft’s 2026 US AI Diffusion Report, ranks the 35 largest metro areas by overall AI usage, and the leaderboard upends expectations: Washington D.C. (39.7%), Dallas (39.4%), Miami (38.6%), and Houston (38.4%) top the list, with Sun Belt metros beating legacy coastal tech hubs, while Pittsburgh (25.8%) trails. But a crucial honesty note: no public dataset ranks ChatGPT specifically by metro with rigor. The Microsoft figures measure all AI tools (the best available proxy), and OpenAI’s own Signals data is state-level and relative-only. This page presents the strongest metro AI ranking available, the ChatGPT-specific state proxy, and a transparent map of what each data layer can and can’t tell you.

4 visualizations 2 sources Last updated June 2026 Free to embed
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Source: Microsoft US AI Diffusion Report (Q1 2026), 35 largest metros, any-AI usage — used as the best available proxy for ChatGPT-era adoption.
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Chart 1 · Top metros

AI usage in the largest U.S. metro areas

AI usage in the largest U.S. metros (top & bottom)

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Source: Microsoft US AI Diffusion Report (Q1 2026): among the 35 metros with working-age populations above 1.5M, Washington D.C. leads at 39.7%, then Dallas 39.4%, Miami 38.6%, Houston 38.4%, Atlanta 38.0%. This measures any AI usage, used here as the best available proxy for ChatGPT-era adoption.
Chart 2 · The surprises

Where the metro ranking defies expectations

Sun Belt metros outrank legacy tech hubs (*approx.)

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Source: Microsoft Diffusion Report 2026: the surprise is that Sun Belt metros (Dallas, Miami, Houston, Atlanta) outrank coastal tech hubs, while Pittsburgh (25.8%) and St. Louis sit at the bottom of the large-metro list. “AI city” ≠ “tech-legacy city.”
Chart 3 · ChatGPT-specific proxy

State-level ChatGPT usage (OpenAI Signals)

ChatGPT state ranking exists — but only as relative tiers

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Source: SmartAsset, using OpenAI Signals Data (Feb 2026): OpenAI published relative rankings of ChatGPT messages per capita by state (not absolute volumes). This is the closest ChatGPT-specific geographic data that exists — it is a state-level ranking, not a metro one, shown here to complement the metro AI-usage figures above.
Chart 4 · The big caveat

Why a precise metro ChatGPT ranking doesn’t exist

The data hierarchy: how much to trust each layer

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Source: AI Behavior Index analysis. No public dataset ranks ChatGPT adoption metro-by-metro with rigor. The Microsoft report measures all AI tools (the best proxy); OpenAI’s Signals data is state-level and relative-only. This chart illustrates the data hierarchy — from rigorous (metro all-AI) to directional (state ChatGPT) to nonexistent (metro ChatGPT) — so readers know exactly how much confidence each layer carries.

About this data

This page ranks U.S. metros by AI adoption, anchored on Microsoft’s US AI Diffusion Report (Q1 2026) for metro-level all-AI usage, with a ChatGPT-specific state-level proxy from SmartAsset’s analysis of OpenAI’s Signals Data (Feb 2026). It is also the most methodology-forward page in this set, because the topic invites a precision the data can’t honestly deliver.

The AI Behavior Index is the research arm of OneChat AI, an integrated multi-model AI platform. We compile and analyze data from primary research sources to make AI adoption and market trends more accessible to journalists, researchers, and decision-makers.

Why this page is careful about what “ChatGPT by metro” can mean: the title topic — a rigorous metro-by-metro ChatGPT ranking — does not exist as reliable public data. Rather than manufacture one, we use the best real layers available: Microsoft’s metro ranking of all AI usage (rigorous, but not ChatGPT-specific) and OpenAI’s Signals data (ChatGPT-specific, but state-level and relative-only). We label each clearly and show the data hierarchy explicitly so readers know the confidence behind every number.

Methodology notes: the Microsoft metro figures are population-normalized estimates of any-AI usage among adults 15–64 — a strong proxy for ChatGPT-era adoption but not a direct ChatGPT measure. OpenAI’s Signals rankings are relative (messages per capita rank), not absolute, and are state-level. Chart 4 is an AIBI illustration of the data hierarchy, not a measurement. We chose transparency over false precision; if rigorous metro-level ChatGPT data is published, we’ll update.

Sources used on this page:

Corrections or suggestions: research@aibehaviorindex.org

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