Should a city be able to place fines for an "illegal" tent city?

I asked Claude AI to weight in on this.

Are there more homeless in the us in climates with mild winters? Do homeless migrate by season? If a state or city has less permissive homeless laws do homeless move elsewhere?

Great research across three distinct questions. Here's what the data shows:

1. Climate and Homeless Concentration: Yes, Strongly

The correlation between mild winters and higher homeless populations is one of the most well-documented patterns in homelessness research. 48% of the unsheltered homeless population is found in California and Florida alone, while just 15% of the U.S. population lives in those two states. ScienceDirect

The logic is straightforward: climate is not directly capitalized into the cost of living for homeless people, who do not pay rent or mortgages — so their populations are much larger in places with warm climates. ScienceDirect Put differently, the "amenity value" of mild weather accrues to homeless people for free, whereas housed people pay for it through higher rents and home prices.

West Coast cities stand out sharply — seven of the 10 cities with the highest per-capita homelessness rates are on the West Coast, and cities like San Francisco, Long Beach, Los Angeles, Portland, Oakland, Sacramento, San Jose, and Fresno all have unsheltered homelessness rates above 50%. Brookings

An important nuance: cities in colder climates tend to have higher proportions of sheltered people USAFacts because survival demands it — cold-weather cities like Boston, NYC, Milwaukee, Baltimore, and Chicago shelter 90%+ of their homeless population. In warm cities, people can survive outside year-round, so the unsheltered count dominates.

2. Seasonal Migration: Largely a Myth, But Not Entirely

This is where the popular assumption diverges from the research. Research on homeless migration among veterans who access veteran services found it to be relatively infrequent, suggesting that wide variation in unsheltered homelessness across warm-weather cities may be maintained throughout the year. Squarespace

I

n other words, most homeless people don't follow the weather like snowbirds. The majority of those experiencing homelessness have resided in their local community for over a year, PubMed Central and the concentration in warm cities is better explained by people becoming homeless where they already live (often due to housing costs) rather than migrating there.

That said, unsheltered homelessness does vary seasonally — it's rarer in New York in winter compared to California in summer PubMed Central, partly because northern cities push people indoors rather than because people are traveling south. There is some anecdotal and localized evidence of seasonal movement, but no large-scale documented pattern of homeless people migrating by season the way retirees do.

3. Restrictive Laws — Do They Push People Elsewhere? Mostly Just Around the Block

This is the most contentious question, and research suggests that strict anti-camping ordinances primarily scatter people locally rather than push them to other cities or states.

A nationwide study of criminalization ordinances across the 100 most populous U.S. cities found a 2.2% average increase in unsheltered homelessness in cities that implemented such ordinances — the deterrence logic doesn't hold. Shelterforce In some cases there was a brief dip in visible homelessness followed by a surge above prior levels.

Involuntary displacement might reduce the visibility of homelessness, but it rarely results in permanent housing and can exacerbate health and safety challenges. PubMed Central Advocates note that breaking up camps shuffles people from one spot to another, and displacement severs ties to case workers, medical clinics and other vital services — making it harder to find housing. CalMatters

The legal landscape shifted dramatically in 2024: in City of Grants Pass v. Johnson (2024), the U.S. Supreme Court ruled that local ordinances imposing criminal penalties on public sleeping or camping do not violate the 8th Amendment, even if the ordinances apply to unhoused persons who lack local shelter options. MRSC Since that ruling, roughly 150 cities in 32 states have passed or strengthened anti-camping ordinances. Stateline

Some advocates warn that cities using the criminal justice system to push homeless individuals out can trigger a "race to the bottom" — rendering environments so hostile that people are forced to move elsewhere, just shifting the problem geographically. Thn But empirical evidence of large-scale interstate migration driven by policy differences remains limited. What's clearer is that stricter laws tend to disperse people within metro areas rather than export them to more permissive cities.

Bottom line: Climate concentration is real and well-documented. Seasonal migration is largely a myth for most homeless individuals. And restrictive laws mostly scatter people locally rather than triggering large-scale movement — while often making their situations worse.

Weighing a homeless bill of rights

Axios News

By Carrie Shepherd, Justin Kaufmann and Monica Eng · Apr 17, 2026

Photo illustration of a homeless woman flanked by two police officers with cracked glass in the background.

Photo illustration: Lindsey Bailey/Axios. Photo: Jason Armond/Getty Images

Legislation proposed in Springfield aims to stop the criminalization of homelessness, but opponents say it won't actually help people without housing.

Why it matters: Advocates for homeless people warn that the U.S. Supreme Court's 2024 decision allowing cities to criminalize sleeping outdoors has made it easier for Illinois cities to punish homelessness.

Context: More than 30 cities across the state have enacted these penalties, according to the Chicago Coalition to end Homelessness, ranking Illinois second to California.

CCH and other advocates are pushing to amend the Bill of Rights for the Homeless Act, which would ban municipalities from imposing criminal penalties and fines for people sleeping, eating or storing property in a public space.

CCH says penalties can make finding housing more difficult because those looking for it would have arrests on their records.

The other side: The Illinois State Association of Counties is opposed because, it contends, the bill preempts local governments' authority.

The Chicago Tribune Editorial Board this week argued the legislation would lead to more encampments, calling the tents populating city parks "unsafe, untenable and unchanging," with "reports of unsanitary and dangerous conditions."

Reality check: Even with ongoing efforts at rehousing people from encampments, the general lack of affordable housing continues to drive issues of homelessness.

There are 34 affordable and available rental homes for every 100 extremely low-income renter households in Illinois. That number goes to 28 for metro Chicago, according to a new report from Housing Action Illinois and the National Low Income Housing Coalition.

What we're watching: Chicago Mayor Brandon Johnson's office just released its five-year plan to address homelessness, including simplifying review timelines for development on city-owned land and assessing best practices in tiny-home housing models.