← Kentuckychartlink · choropleth
Kentucky by: counties · ZIP codes
Map of Kentucky by county, one number per county
Also: Kentucky county map · KY counties map · colour every county in Kentucky by a value · Kentucky county-level choropleth · map of Kentucky counties

Example: Average income per tax return by county in Kentucky, 2021 — Adjusted gross income per federal return filed for tax year 2021, by county in Kentucky. Grey counties have too few returns for the IRS to publish.
About this template
Data: one row per county in Kentucky with its 5-digit FIPS code (21001 is the first) and a number; the name with the state ("Harris, TX" style) works too. A county with no row stays grey. The map is fitted to Kentucky alone, so small counties read. Same design as the national county map and the other 49 state maps.
A choropleth map of the regions of the "us-counties-ky" geography, each region filled by one number from your data (the "income" column).
A sequential colour scale from pale blue for the smallest values to deep navy blue for the largest; pinned to 40000 to 150000, so values beyond the ends take the end colour and the colour bar says ≤ and ≥; a gradient colour bar below the map, with its labels underneath; values formatted as USD amounts, in compact form (1.2k, 3.4M), 0 decimals; on a white canvas (#ffffff) with near-black text — a light theme; 0.5-unit hairline outlines between regions.
The title and description are left-aligned above the chart. Font: Inter (the default); a source line with a link sits at the bottom, with the chartlink badge in the corner.
Data: 2 columns — county (string, "County (5-digit FIPS)"), income (number, "Average AGI per return ($)") — and 120 rows in the example "Average income per tax return by county in Kentucky, 2021". Regions are named by ISO 3166-2 region codes or region names; a region with no row stays unfilled in grey, and an unknown code fails loudly with the nearest matches. Your data keeps the same column ids and every other setting comes from the template; an agent can change any of them.
Other looks of this template — dark (on a dark canvas): ast_jmpIgDkxZx4YSoq4GN0Io; buckets (with the values in classes and a swatch legend): ast_hSwMKLaH8q5w8nkoR40RE; editorial (in the editorial house style — serif type on paper, a green ramp): ast_aBVQuLzkYaMXaZrnLrRPT; categories (with a text category per region and a swatch legend): ast_WcvwDPyMM8d1IL1L8OZrv; buckets-dark (with the values in classes and a swatch legend, on a dark canvas): ast_ElQxqPdrylgxNJ6zP713b; surroundings (with the land around the place drawn in grey): ast_miuyIpzDzArVkx4lONxoN; categories-dark (with a text category per region and a swatch legend, on a dark canvas): ast_o4Y09IdI5L8jK86qd6Luy; buckets-editorial (with the values in classes and a swatch legend, in the editorial house style — serif type on paper, a green ramp): ast_S2GsoP6zMl4RX8W1m2SAi; dark-surroundings (on a dark canvas, with the land around the place drawn in grey): ast_xzyZDt511TgRKquMOGkhT; buckets-surroundings (with the values in classes and a swatch legend, with the land around the place drawn in grey): ast_MWfj6i3TW0cjwoXTVmpYQ; categories-editorial (with a text category per region and a swatch legend, in the editorial house style — serif type on paper, a green ramp): ast_62DmI98biTPLZ1G58M6Kd; editorial-surroundings (in the editorial house style — serif type on paper, a green ramp, with the land around the place drawn in grey): ast_OMf4Q2xeyxr4qOdFf1b1A; categories-surroundings (with a text category per region and a swatch legend, with the land around the place drawn in grey): ast_HlN9cJYJcwrcnk0wOLgJy; buckets-dark-surroundings (with the values in classes and a swatch legend, on a dark canvas, with the land around the place drawn in grey): ast_6s3UIvPT4Zb2FWHaC18K3; categories-dark-surroundings (with a text category per region and a swatch legend, on a dark canvas, with the land around the place drawn in grey): ast_TArkqDHqgDlow5jZhJ7BE; buckets-editorial-surroundings (with the values in classes and a swatch legend, in the editorial house style — serif type on paper, a green ramp, with the land around the place drawn in grey): ast_MT5kiN36SJLrI1ffvuGQn; categories-editorial-surroundings (with a text category per region and a swatch legend, in the editorial house style — serif type on paper, a green ramp, with the land around the place drawn in grey): ast_ZfHZnlcvo6PQexvCroSYU. On the page, switch with the toggles; an agent passes that id as the template instead.
Use it with your agent
Copy the prompt, paste it into Claude, ChatGPT, Cursor or any agent with the chartlink MCP server or API, and give it your numbers. It rebuilds this exact design with your data and hands back an embed, a PNG and a page.
The prompt in full
Data this template expects
| column id | type | in the example |
|---|---|---|
| county | string | County (5-digit FIPS) |
| income | number | Average AGI per return ($) |
120 rows in the example. Your data keeps these column ids; everything else about the chart comes from the template.
For agents: the API call
POST https://chartlink.app/api/assets
{
"template": "ast_qaza8qT19d4rm434vhWDm",
"knobs": {
"theme": "light",
"dataType": "gradient",
"title": {
"text": "Your title"
},
"source": {
"text": "Where the numbers come from"
}
},
"data": {
"columns": [
{
"id": "county",
"type": "string"
},
{
"id": "income",
"type": "number"
}
],
"rows": [
[
"…"
]
]
},
"publish": true
}The recipe (the template's settings)
{
"chart": {
"domain": [
40000,
150000
],
"format": {
"kind": "currency",
"compact": true,
"currency": "USD",
"decimals": 0
},
"outline": {
"width": 0.5
},
"geography": "us-counties-ky"
},
"title": {
"text": "Average income per tax return by county in Kentucky, 2021"
},
"preset": "map-light",
"source": {
"url": "https://www.irs.gov/statistics/soi-tax-stats-individual-income-tax-statistics-zip-code-data-soi",
"text": "IRS Statistics of Income, individual income tax statistics, tax year 2021"
},
"encoding": {
"value": {
"column": "income"
},
"region": {
"column": "county"
}
},
"description": {
"text": "Adjusted gross income per federal return filed for tax year 2021, by county in Kentucky. Grey counties have too few returns for the IRS to publish."
}
}map · choropleth · united-states · kentucky · counties · us-state-set
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