为每个区域填色
颜色深浅代表数值。适合比率、占比和人均指标——这些数字已经消除了面积和人口规模的影响。
打开模板全部地图
Illinois County Map Maker
A blank Illinois county map to print, and a builder to fill it with your own data. Download the free outline of all 102 counties, or upload a spreadsheet and publish an interactive Illinois map you can embed anywhere.
Illinois 空白地图，免费下载
全部 102 个counties，线条干净的轮廓图。可打印、可填色、可放进文档——无需注册，也无需署名。
任何用途均可免费使用，包括商用与课堂。由编辑器所用的同一套边界数据生成。
下载 SVGIllinois 地图能看出什么
Illinois divides into 102 counties, and it is one of the most lopsided county maps in the country. Cook County occupies a small rectangle in the northeast corner and holds roughly two out of every five people in the state; add the five collar counties around it and you have somewhere near two-thirds of Illinois inside about four per cent of its area. The other ninety-six counties run south for four hundred miles through corn, coal and river towns, and they are drawn at a size that reflects the nineteenth-century idea of a day's ride to the courthouse rather than anything about who lives there now. Every honest Illinois county map has to deal with that imbalance, and most of the design decisions on this page come back to it.
Illinois 的三种画法
数值是比率时给区域填色，是计数时用大小不同的标记。把这两者用反，是数据地图最常见的误导方式。
什么时候该画 Illinois 地图
Your data is reported by Illinois county
IDPH health indicators, IDES labour and wage figures, Illinois State Board of Education report-card data, USDA crop statistics and State Board of Elections returns are all published by county.
You are showing a rate or a share
Unemployment rate, uninsured share, share of households with broadband, share of the vote, median household income. Rates are already adjusted for population, which is what shading a region needs.
You want to show Chicagoland against downstate
It is the single most common comparison made about this state, and a county map is the only way to make it without asserting where the line falls — the reader sees Cook and the collar counties and draws it themselves.
You need a blank map to print or fill in
Classroom exercises, county fair and extension materials, planning workshops, colour-by-hand sessions. The free outline above prints cleanly at any size.
什么时候不该画 Illinois 地图
You are mapping totals rather than rates
Shade Illinois by a raw count and you have drawn Cook County. Nothing else on the map can compete with it, and the other 101 shapes collapse into a single pale band. Use symbols or bubbles sized by the count instead.
Your story is inside Cook County
Chicago's neighbourhoods, wards and community areas all live inside one shape here. A county map cannot show anything that varies within the city, which is most of what people want to say about Chicago.
The comparison crosses a state line
Madison and St. Clair belong to the St. Louis metro; Lake and McHenry blend into southern Wisconsin. If that is the point, use the US county map so the reader can see past the border.
Only a few counties have data
Southern Illinois counties are small in population, and suppressed cells are common in health releases. A map with seventy grey shapes and thirty coloured ones is a worse bar chart — rank the counties you do have.
如何制作 Illinois 地图
从表格到发布上线，一步一步来。
Download the blank map, or start from the template
The free outline above is a plain SVG of all 102 counties — print it, or drop it into a document. To build with data, open the PlotSet Illinois (counties) template, which comes with sample data already bound.
Prepare a county column and a value column
One row per county: the county name or its five-digit FIPS code in the first column, your number in the second. FIPS codes for Illinois all begin 17.
Upload or connect your data
Import a CSV or Excel file, paste from a spreadsheet, or connect a Google Sheet so the map can be refreshed when the source updates.
Pick the style that fits the measure
Shade the counties for a rate, or switch to symbols or bubbles for a count. Same geography, same data, different encoding.
Choose a colour scale on purpose
Sequential for a low-to-high measure, diverging only when a real midpoint exists — the state average, zero change, a 50 per cent line. Four to six steps read more precisely than a smooth gradient.
Publish, embed or export
Publish for a live interactive map with a tooltip on every county, or export a PNG, SVG or PDF for a report or a deck.
从已加载示例数据的 Illinois 模板开始，再换成你自己的数据。
打开模板让 Illinois 数据正确匹配
地点列应该长什么样，以及去哪里找现成能对上的数据。
All 102 counties, spelled as the state spells them
The joins that fail are the run-together and apostrophe-free names: DuPage, DeKalb, DeWitt, LaSalle and Jo Daviess appear in datasets as "Du Page", "De Kalb", "De Witt", "La Salle" and "JoDaviess" about as often as not. St. Clair carries a full stop. Kankakee, Sangamon, Winnebago and Menard are routinely mistyped.
Illinois FIPS codes start at 17
17001 is Adams, 17031 is Cook, 17203 is Woodford. Store the column as text so the codes keep their shape, and remember the county part is odd-numbered rather than sequential.
There are two Lake Counties on the same border
Illinois has a Lake County north of Chicago and Indiana has one immediately to its southeast; they touch. Any dataset joined on name alone will hand one's rows to the other, and the two are close enough on the map that the error is easy to miss.
"Downstate" is not a geographic direction
In Illinois usage it means everywhere outside Chicagoland, including Rockford and Galena, which are north of Chicago. If your dataset carries a downstate flag, check what it actually contains before mapping it as a region.
Where to get Illinois county data
IDPH, the Illinois Department of Employment Security, the Illinois State Board of Education, the State Board of Elections and the Census Bureau's ACS all publish county tables. The University of Illinois Extension is the usual source for agricultural series.
Illinois 地图上的常见错误
Shading counts instead of rates
On this state it is the most damaging version of the mistake anywhere in the country: one county with two out of five residents will take the darkest class and flatten everything else to nothing.
Letting the map hide two-thirds of the population
The collar counties are small shapes carrying enormous numbers, and the southern counties are large shapes carrying very few. Shading by area silently argues the opposite of the demography — say so in the caption, or pair the map with a sorted bar chart.
Missing Putnam and the small northern counties
Putnam is the smallest county in the state by area and disappears at web sizes. If one of the small shapes carries the story, label it directly or add an inset.
Suppressed data drawn as zero
Health and education releases blank out small counts for privacy. Import those cells as empty rather than as 0, or the sparsest counties will read as the healthiest ones on the map.
Using a rainbow colour scale
A sequence of hues has no natural order, so readers cannot tell high from low without checking the legend on every county. Use one hue, light to dark.
Illinois 地图常见问题
Yes. The outline above is a free SVG of all 102 Illinois counties — right-click to save it, print it, or drop it into a worksheet or document. No account needed.
把你的数据放到 Illinois 地图上
上传表格，几分钟内发布一张交互式地图——免费，无需信用卡。