SocialWalk measures how easy it is for 18–34 year olds to build repeat in person social connections in U.S. cities through walkable access to third places that support regular low pressure interaction.

Most friendships and relationships do not come from a single perfect match. They grow through repeated exposure, routines, faces, and time. Cities that make it easy to return to the same places on foot create better conditions for trust, belonging, and community.

SocialWalk focuses on places where connection can emerge gradually through repeated participation rather than performance, intoxication, or algorithmic matching!

Rankings

These rankings compare how structurally easy it is to build repeat, in-person social connection in each city. Higher SocialWalk Scores reflect stronger walkable social density. Click any city to view its venue mix and local social infrastructure.

# City State SocialWalk Score Walkable Social Density Affordability Population 18–34
Loading…

How Relationships Actually Form

Western society strongly views most personal problems as individual failures rather than environmental ones. This attitude applies for rising rates of loneliness, declining civic participation, and shrinking friendship networks. People are told to improve their social skills, spend less time online, or put more effort into relationships. However, relationships do not emerge from personal effort alone. They emerge from environments that make repeated interaction possible.

Cities play a major role in determining which of these systems dominate everyday life. When social generators are scarce, distant, or expensive, substitutes fill the gap. When cities provide dense networks of accessible third places, repeated interaction becomes a natural part of daily life.

Friendship = Consistency × Low-Cost × Non-Negative Exposure × Compatibility × Overlap × Mutual Investment × Time

Environmental factors (influenced by city structure) Interpersonal factors (individual-dependent)

This equation summarizes the conditions under which friendships tend to form. Most relationships emerge gradually through repeated exposure in environments where interaction is easy and emotionally safe. When people regularly encounter the same individuals in shared activities familiarity builds over time and small interactions accumulate into meaningful relationships.

Some factors in this process are interpersonal, such as compatibility and the willingness of two people to invest in a relationship. However, many of the most important conditions are environmental. Cities determine how often people encounter one another, how expensive participation is, and whether repeated interaction happens naturally as part of everyday life.

App-Based Matching ≈ Selection × Profile Optimization × Initial Attraction

App-based systems operate under a different social model. They priortize curated profiles and immediate attraction. While these systems can efficiently connect strangers, they do not reproduce the repeated exposure and shared environments that traditionally allowed social networks and communities to form organically.

Walkable Social Density = 0.65 z(SW18_34) + 0.25 z(venues_per_sq_km) − 0.20 z(ln(population))

Walkable Social Density estimates how strongly a city's physical structure supports repeated social interaction. Cities with high concentrations of young adults and dense clusters of repeat-interaction venues create more opportunities for people to encounter one another regularly.

affordability_score = −1 × z( ln((median_gross_rent × 12) / median_household_income) )

Affordability captures whether residents can remain embedded in a city long enough for relationships to stabilize. When the cost of living is more expensive, the time and stability required for community formation become much harder to sustain.

SocialWalk Score = Walkable Social Density + (0.25 × affordability_score)

The final SocialWalk Score combines social infrastructure and economic stability. Cities that concentrate repeat-interaction venues within walking distance and allow residents to remain economically stable provide stronger conditions for long-term social connection.

Social Substitutes vs Social Generators

When environments fail to generate consistent in-person interaction people turn to social substitutes.

social substitutes are activities or systems that provide emotional comfort, but do not reliably produce new consistent social relationships.

Examples: smartphones, social media, entertainment, video games, drugs, alcohol, apps, pets, etc.

Social substitutes can partially substitute for the emotional functions of social connection without generating the repeated interpersonal exposure required for friendship formation.

Social substitutes only become unhealthy when they replace social generators. A society where the majority of people replace social generators with social substitutes is an unhealthy social ecosystem.

social generators are environments that naturally produce repeated interaction between the same people over time.

Examples: third spaces, volunteer groups, service groups, activism groups, dance groups, martial arts groups, makerspace groups, board game groups, hiking groups, fitness groups, religious groups.

These environments generate stories, shared experiences, and familiarity, which allow relationships to accumulate gradually.

A society where people can easily be apart of multiple social generators is a healthy social ecosystem.

Third Spaces

Third spaces are environments that can contain multiple social generators.

For example, a gym is not a third space if people only use the gym to workout. A library can become a third space if it hosts multiple different social events for multiple different groups.

A popular walkway, town center or town market is a perfect example of a third space.

A walkable city will have significantly more third spaces than a car-based city. This is because the walk itself becomes a third space offering so many more opportunities to interact with other people!

Third spaces allow for more unstructured environments thus allowing for more bonding and trust to form.

Third spaces are very sensitive to their population. Too small and you can't interact with enough people. Too big and you can't see the same person you previously interacted with.

Recurring Healthy Age-Compatible Accessible Communities

Multiple Times A Week

Not a Job or Work

Faith

Sports

Art

Games

Tech

Animals

Nature

Service

Quotes

“Not TV or illegal drugs but the automobile has been the chief destroyer of American communities.”
— Jane Jacobs
"In Bowling Alone, Robert Putnam documents a marked decline in American social capital and finds that commute time is more predictive than almost any other variable in determining civic engagement. He writes that 'each ten additional minutes in daily commuting time cuts involvement in community affairs by ten percent — fewer public meetings attended, fewer committees chaired, fewer petitions signed, fewer church services attended, and so on.'"
— Jeff Speck
"Despite spending one dollar out of six on healthcare, the United States has some of the worst health statistics in the developed world. According to the U.S. Centers for Disease Control (CDC), fully one-third of American children born after 2000 will become diabetics. This is due partly to diet, but partly to planning: the methodical eradication from our communities of the useful walk has helped to create the least active generation in American history. This insult is compounded by the very real injuries that result from car crashes - the greatest killer of children and young adults nationwide-as well as an asthma epidemic tied directly to vehicle exhaust."
— Jeff Speck
"Car crashes have killed over 2.3 million Americans, considerably more than all of our wars combined. They are the leading cause of death for all Americans between the ages of one and thirty-four, and their monetary cost to the nation is estimated to be hundreds of billions of dollars annually."
— Jeff Speck
"The way we move largely determines the way we live."
— Jeff Speck
"A substantial proportion of human misery is probably due to genetic and cultural mismatch with our current environments."
— Elisabeth Lloyd, Valid Wilson, and Elliot Sober
"Our brain seeks a constant social baseline. We need other human beings and there is a draining cognitive tax to being alone. We spend more cognitive effort and absolute energy in isolation if we are not embedded in a social network."
— David Samson
"The institutions we have created are monstrously big and too unwieldy for us to see how they are influencing our well-being...These institutions were never the basic social units of survival...The core of mismatch is that modern society has made us more physically isolated by decreasing our social support; all the while it has made us more mentally unstable by increasing social pressure, tricking us into thinking that low-grade online and institutional social interaction is good enough to live a healthy and fulfilling life."
— David Samson
"There is a reason why severe punishment for prisoners is to be sent to solitary confinement, isolated from others. Yet, throughout the twentieth and twenty-first centuries, Americans have been moving in that direction, inch by social inch, becoming more and more self-isolated."
— David Samson
"For millions of years, humans dwelled in decentralized social networks of about 30 to 150 people, where everyone knew everybody, and the greatest extensions of one's primary tribal identity spanned a few thousand individuals at most...But with agriculture coming online, a boom cycle accrued and we lost our shared independence of social memory, which was the result of the rise of anonymity."
— David Samson
"The problem of humanity is the following: We have paleolithic emotions; medieval institutions; and god-like technology."
— Edward O. Wilson
"Soon after teens got iPhones, they started getting more depressed. The heaviest users were also the most depressed, while those who spent more time in face-to-face activities, such as sports teams and in religious communities, were the healthiest."
— Jonathan Haidt
"It encourages us to make rapid public judgments with little concern for the humanity of those we criticize, no knowledge of the context in which they acted, and no awareness that we have often done the very thing for which we are publicly shaming them."
— Jonathan Haidt
"So what happens to American children who generally get their first smartphone around the age of 11 and then get socialized into the cultures of Instagram, TikTok, video games and online life for the rest of their teen years?... Gen Z is the first generation to have gone through puberty hunched over smartphones and tablets, having fewer face-to-face conversations and shoulder-to-shoulder adventures with their friends."
— Jonathan Haidt
"Our evolutionary advantage came from our larger brains and our capacity to form strong social groups, thus making us particularly attuned to social threats such as being shunned or shamed. People and particularly adolescents are often more concerned about the threat of 'social death' than physical death."
— Jonathan Haidt
"Loneliness is tied to being more likely to die at any time of any cause at any phase of life"