Tarpon Springs is a Greek town because sponge divers came from the Dodecanese to work the Gulf a century ago and stayed. New Bedford holds Portuguese and Cape Verdean families because whaling ships took on crews in the Azores and off the African coast. Basques settled Boise and turned to herding sheep. Ford hired Yemeni men to build cars in Detroit. Vietnamese refugees took up shrimping off Louisiana and Texas. The country is built out of pockets like these, close to two hundred separate origins by the census count, blended across 340 million people into something no single word holds.
Zoom in on most American cities and the colors run together. One stretch southwest of Houston can be Nigerian, Jordanian, Mexican, Vietnamese, Salvadoran, and Irish on a single block. Chicago is not that city. Chicago reads in hard blocks. The New York Times mapped the country this summer and caught the difference at a glance. Los Angeles blends gold and green, Minneapolis runs purple, and Chicago comes up in blunt reds and blues and yellows, each color holding its edge. That sharpness is the story.
Chicago in blocks
Where each group concentrates, lake to the east. A schematic, not a census map.
N
(mixed)
(West Side)
(South Side)
Michigan
An original schematic in the spirit of the census ancestry map, not a reproduction of it. National flags mark each group; African American carries the Pan-African flag, since there is no single country of origin. Positions are approximate, meant to show the pattern rather than plot a tract.
Explore the Times’ full interactive map →
The Times read its map as a record of two centuries of push and pull, and of policy that opened the door to some people and barred it to others. That is exactly right, and it is the whole of the work I do. People arrived in Chicago, wave after wave. Law placed them, and sometimes law removed them. Neither force explains a single block. Together they explain the city. Let me walk the map the way a Chicago immigration lawyer reads it.
Start with the country, because Chicago sits inside it. From 1820 to 1860 the door stood mostly open, and more than five million people came. The steamship dropped the price of passage, and the lines sold cheap immigrant fares bundled with rail tickets to the interior. Once a community took root somewhere, it pulled the next arrivals toward it, the way it always has. Germans left political collapse at home, the Irish left the famine, and after the 1848 gold strike in California the first Asian laborers were recruited onto the farms and the railroads.
Then the flood. From 1880 to 1920, twenty-four million immigrants landed, pushed out by pogroms across Eastern Europe and by the upheaval of a newly unified Italy. They went nearly everywhere except the South, where the landed elite already had cheap labor from the formerly enslaved and from poor tenant farmers. Congress met the wave the way it usually does, by moving to stop the next one. It had already barred almost all Chinese immigration in 1882, the first federal law to slam a door on a whole people. In the 1920s it built a national-origins quota system that rationed entry by birthplace, generous to Western Europe, stingy toward the South and East, set near zero for most of Asia. Ships raced through the night to reach Ellis Island before the year’s quota filled. The door stayed mostly shut for forty years, and the foreign-born share of the country fell to the lowest level in its modern history.
Then, in the 1960s, lawmakers who saw the quota system for the racial sorting it was replaced it with one built on family ties and skills. The next wave came from new places, and the makeup flipped. A century ago the immigrant was almost always European. Of the roughly fifty million immigrants counted in 2024, most come from the Americas and from Asia. Mexico still leads, then India, China, the Philippines. Europe is a thin slice now. Refugees came too, Southeast Asians displaced by the Cold War, then Cubans and Haitians and Venezuelans and Afghans and Ukrainians fleeing collapse and war, most of them steering toward the cities where their countrymen already lived. The foreign-born share is back near fifteen percent, and Washington is again writing restriction into law, in bans and quotas that echo the 1920s closely enough to notice.
The map you see now is the last century’s policy, printed in where people’s grandchildren live. Chicago recorded every wave of it.
Irish and German: the founders
The first great arrivals came to dig. Irish laborers cut the Illinois and Michigan Canal through the 1840s and stayed to run the wards, the parishes, and in time the machine that governed Chicago deep into the next century. Germans arrived in the same decades and took the North Side, brewing and printing and filling the skilled trades. Swedes settled Andersonville. Greeks took their own near-West-Side blocks. By the Civil War the city was foreign-born in fact, if not yet in its own imagination.
The flood
Then came the many. Poles filled the Milwaukee Avenue corridor until Chicago held one of the largest Polish populations of any city on earth. Ukrainians built the near West Side blocks still called Ukrainian Village, onion domes and all. Lithuanians arrived in such numbers that Chicago became, by most accounts, the largest Lithuanian city outside Lithuania, packing into Bridgeport and Back of the Yards to work the stockyards; Upton Sinclair set The Jungle among them. Italians settled Taylor Street. Bohemians built a Southwest Side neighborhood and named it Pilsen, after the city they had left. Eastern European Jews crowded onto Maxwell Street, then moved west into Lawndale.
Most of those enclaves have since thinned below the map’s threshold. The Lithuanian, Ukrainian, and Bohemian quarters did not vanish so much as disperse, their grandchildren scattering into the suburbs and the general mix, which is why a map drawn to today’s concentrations barely shows them. That is its own kind of erasure, quieter than the census religion ban, and just as real.
By 1910, three of every four Chicagoans were immigrants or the children of immigrants. The city was not a melting pot. It was a room full of separate pots, each on its own fire.
The map even offers “American” as an origin, chosen mostly by the descendants of the oldest arrivals, the English and Scotch-Irish who came first and stopped naming a homeland. It is a claim, not a birthright, and it makes the Polish block or the Mexican block next door no less American than the one that took the plain word for itself.
Diverse before it was a city
Chicago was mixed before it was Chicago. The land belonged to the Potawatomi, and to the wider Council of Three Fires before them, until the treaties and forced removals of the 1830s pushed them west at gunpoint. The first permanent settler who was not Native was Jean Baptiste Point du Sable, a Black man of Haitian and French descent who built a trading house at the mouth of the river in the 1780s. A Native place, opened to the wider world by a Black Haitian. The city has never once been the white and Christian monolith some people picture when they imagine its founding. It began as a meeting point, and it stayed one.
The Great Migration
The next great wave were not immigrants at all. They crossed no ocean, filled out no visa, and descended from people who were brought here in chains rather than choosing to come. Black families left the South by train and bus, many of them reading the Chicago Defender before they came, and settled the South Side stretch that became Bronzeville before spreading west. They arrived into a city that had already decided where they would be allowed to live.
This is where arrival and law pull apart most cleanly, and where law wins. White Chicago wrote racial covenants into its deeds, private contracts that promised never to sell to a Black buyer. Banks drew red lines on maps and starved the enclosed blocks of mortgage money. When Carl Hansberry bought a house on the wrong side of a covenant line, the fight climbed to the Supreme Court, and his daughter Lorraine later turned it into A Raisin in the Sun. Hansberry won in 1940 on narrow procedural grounds, and the covenants held on across the city. Only in 1948, in Shelley v. Kraemer, did the Court finally forbid courts from enforcing them. By then the lines were already cut into the map. You can still see them in the hard color blocks the Times charted this year. Segregation this sharp is not an accident of heritage. Somebody drew it, on purpose, in contract and mortgage.
The Latino city
Mexicans came to Chicago to work the steel mills and the rail yards, and the city pulled them in when it wanted hands and threw them out when it did not. Washington ran mass deportation drives in the 1930s and again in the 1950s, even as the Bracero program bused Mexican laborers north to fill the very same jobs. The families who stayed built Pilsen, Little Village, and Back of the Yards into the Mexican heart of the Midwest. Puerto Ricans, citizens the day they were born, made Humboldt Park their own and hung the flag over Division Street.
The Mexican story is where the present bites hardest, and I laid it out at length earlier this month. The short version runs against the national trend. Across the country, the Mexican-born population has fallen from its 2007 peak. In Chicago it went the other way. The city’s Mexican-born count rose about 9 percent in 2024, to roughly 227,700, reversing a full decade of decline. That was the year before the raids.
The wider world
The 1965 law reopened the door, and Chicago’s map gained colors. Chinatown, hemmed in for decades, grew and pushed settlement toward Bridgeport and the suburbs. Devon Avenue turned into one of the great South Asian commercial strips in the country, Indian sari shops beside Pakistani groceries beside Bangladeshi kitchens. Assyrians, Ukrainians, West Africans, and a Chinese population reaching well past the old Chinatown all took their place on the grid. The newer immigrant does not always land in the historic enclave. More and more, he lands in the suburbs and skips the enclave altogether.
Buses in, then the raids
Chicago in 2024 held about 597,400 immigrants, close to 22 percent of the city, the highest share since 2006. The newest layer arrived by bus. Starting in 2022, border-state governors sent tens of thousands of asylum seekers north, many of them Venezuelan, and Chicago scrambled to shelter them through two hard winters. It was the same magnet that has always worked here, people steering toward a city where others from home already lived, only this time the trip was engineered as a political message.
Then the wave turned inward. When border crossings collapsed, the government pointed its enforcement at the interior, at the cities, and Operation Midway Blitz sent federal agents through Pilsen and Little Village, the Mexican core. Over time the tactics grew quieter, moving from street sweeps to targeted arrests at courthouses and check-ins, where the government already knows where you will be. The reach now runs through data most people never think about. A boarding pass has become a kind of search, and I wrote recently about the TSA–ICE agreement that turns a domestic flight into an arrest. Even the ordinary paperwork of belonging carries a trap. For a noncitizen, registering to vote can wreck a green-card case, sometimes over a mistake the state itself made in adding the name. The immigrant in these neighborhoods today crosses a legal minefield the 1910 arrival never faced.
It is an old rhythm all the same. Fear empties the streets. Then, across years, the streets fill again, the newcomers turn into neighbors, and the city absorbs them the way it absorbed every wave before. The person an agent pulls off a job this month is cut from the same cloth as the steerage passengers we now print on postcards.
The other Chicago tradition
Law does a second thing here, and it runs the other way. Chicago does not only place people and shut them out. At intervals it refuses to do the federal government’s removal work.
That refusal is older than the word “sanctuary.” Before the Civil War, Northern states passed personal liberty laws that gutted the federal Fugitive Slave Acts from below, guaranteeing jury trials, forbidding local officials from slave-catching, denying the use of county jails. The federal statute stayed on the books and went hollow. Across roughly eighty years of that resistance, the whole apparatus returned only a few hundred people. Emerson called the Act a dead letter in the states that fought it. I traced that lineage in a longer piece on how states quietly resist federal overreach, from the personal liberty laws straight through to the modern sanctuary ordinance.
Chicago inherited the reflex. Harold Washington signed an executive order in 1985 barring city workers from questioning residents about immigration status. The city wrote it into law as the Welcoming City ordinance in 2006. Illinois scaled it statewide with the TRUST Act. The fight is live again right now, as federal power presses against state autonomy in the courtrooms and on the streets. The language shifts across two centuries. The move does not. A federal government orders removal. A city declines to supply the hands.
Who comes next
Demographers now think the country could reach net-zero immigration, arrivals matched by departures, sooner than almost anyone expected a few years ago, as enforcement accelerates and legal pathways narrow. If that holds, the map will change again, the way the 1920s quotas changed it, printing themselves into where people live two and three generations on.
But the pull has not weakened. The country is aging, its workforce thinning, its need for workers running straight into a politics that wants fewer of them. A nation can answer that need by building a longer table or by building a higher wall, and it has tried both.
This post is general information, not legal advice, and does not create an attorney-client relationship. If you or a family member face immigration enforcement, consult a licensed immigration attorney about your specific situation.
