San Francisco
San Francisco, officially the City and County of San Francisco, is the fourth-most populous city in California and the 17th-most populous in the United States, with a population of 826,079 in 2025. Among U.S. cities with a population of 300,000 or more, San Francisco is ranked first by per capita income, second by population density, and sixth by aggregate income as of 2023. Some 4.6 million residents live in the city's metropolitan statistical area, which is the 13th-largest in the United States. Around 9.2 million live in the San Jose–San Francisco–Oakland combined statistical area, the fifth-largest in the United States.
Should you base here?
What this city's own numbers say about who it fits, how long you can realistically stay, and what to weigh before committing.
A good base for
- Heavy remote work — median internet is fast enough for calls and uploads
- Working out of cafés and coworking — there's a real scene here
- People sensitive to air quality — the air reads clean
Less ideal for
- Tight budgets — this is a premium-priced base
- Travelers who weigh safety heavily — the score is on the low side
- Treating it as a permanent base without tax planning — there's a residency-day threshold to watch
How long can you stay?
We don't have the visa window for this country on file yet — check the official source below before planning.
Stay past about 183 days in a year and you may become a tax resident here — get advice before you do.
What to weigh first
- BudgetPlan around it Monthly costs land around $5,500 — this is an expensive base.
- Tax residencyWorth a look Stay past about 183 days in a year and you may trigger local tax residency — plan before you do.
Before you commit
This is a starting point, not legal or tax advice. Rules change — always confirm with official government sources before making plans.
Want this as a shareable brief — the trade-offs, a stay-length plan, and the checks to run? Generate a Decision Report (Pro).
Decision Report
A one-page brief for this city — your Fit Score, monthly cost, visa difficulty, tax-residency risk, best months, and the caveats to check first.
| Metric | Value | Score | Note | |
|---|---|---|---|---|
| Internet Speed | 175 Mbps | 9/10 | Estimated | |
| Cost of Living | $5,500 /mo | 0/10 | Estimated | |
| Rent 1BR | $3,000 /mo | 1/10 | Estimated | |
| Safety Score | 4.5 /10 | 5/10 | Estimated | |
| Coworking | 100 spaces | 10/10 | ||
| Avg Temperature | 13.2°C | 6/10 |
Rent: 1BR city-centre estimate (USD/mo) compiled from NomadList, Expatistan and public nomad guides. Not officially sourced — use as a comparison signal, not a quote.
Cost breakdown
Assumes a central, single-occupancy lifestyle with moderate eating out. The total includes rent; non-rent items are estimated from regional patterns.
| Item | Detail | Amount | Share |
|---|---|---|---|
| Rent | Central 1BR apartment | $3,000 | 55% |
| Food | Groceries + moderate dining out | $1,125 | 20% |
| Transport & comms | Local transit + mobile / internet | $625 | 11% |
| Other | Leisure, essentials, buffer | $750 | 14% |
| Total | Monthly estimate | $5,500 | 100% |
Rent is a published estimate (actual figure); other items are an estimated split of the total.
Climate Overview
Monthly temperature averaged from 2015–2024 (Open-Meteo archive). Humidity is an estimate from annual average.
| Metric | Value | Note |
|---|---|---|
| Avg temperature | 13.2°C | 2015–2024 average |
| Warmest month | 21.2°C | Sep |
| Coldest month | 7.81°C | Dec |
| Humidity (annual) | 79% | Comfort range 40–60% |
| Sunshine | 3,794 h | Annual total |
| Precipitation | 581 mm | Annual total |
Air Quality
GoodObserved: 2026-07-27 23:00
Visa Information
| N/A |
Tax Overview
| Income Tax | The US uses the "Substantial Presence Test" which counts all days in current year + 1/3 of prior year + 1/6 of year before that (must total ≥183). US citizens are taxed on worldwide income regardless of residency. |
|---|---|
| Residency | 183 days |
Next Actions
Everything you need to move here.
| Find a stay | Hotels & apartments via Booking.com | Browse stays → |
|---|---|---|
| Nomad insurance | Global health coverage from SafetyWing | Get insured → |
| Get an eSIM | Stay connected on arrival with Airalo | View eSIM plans → |
| Move money | Low-fee international transfers with Wise | Open account → |
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