Stamford, Connecticut population is 139,535 as of July 1, 2025 (U.S. Census Bureau Vintage 2025 estimate), ranking #203 nationally and #2 in Connecticut. Cost of living runs 2.1% below the U.S. average (BEA RPP 2024); a family of four needs roughly $131,764/yr to break even (2025 modeled). This profile draws on 11 federal datasets covering population, housing, income, employment, climate, and risk.
At a glance.
2025 population
139,535
+191 in the last year
Top 2% of 19,483 U.S. cities
Census Vintage 2025
Cost of living
RPP 97.9
−2.1% vs US
non-metro · BEA 2024
Family-of-4 budget
$131,763/yr
+64% vs US
Modeled 2025 · federal sources
Median HH income
$111,586
+44% vs US
ACS 2020–2024 5-yr
Median home value
$624,400
+106% vs US
ACS 2020–2024 5-yr
2-BR fair-market rent
$2,511/mo
HUD FY2026 · 40th pct
Avg July high
85°F
NOAA 1991–2020
Gigabit broadband
82%
ISP-reported, FCC BDC
How many people live in Stamford?
139,535 people live in Stamford as of July 1, 2025 (U.S. Census Bureau Population Estimates Program, Vintage 2025), the #203 largest U.S. city.
Source detail
2025 population
Source agency
U.S. Census Bureau, Population Division
Dataset
Census PEP
Vintage / period
Vintage 2025 (Jul 1, 2025)
Native geography
Census PEP subcounty place records for the included city universe.
Transformation
Copied from POPESTIMATE2025, joined by Census GEOID, and used for ranks, filters, and city pages.
Known limit: Annual estimate, not a decennial count; each new PEP vintage can revise the prior series.
Population grew 3.0% from the April 2020 base to mid-2025.
Vintage 2025 · annual estimates
Recent history (V2025 series, 2020 base → 2025).
2020 base: 135,434 → 2025: 139,535 (+3.0%)
Year
Population
Reference date
2020 base
135,434
April 1, 2020
2020
135,447
July 1, 2020
2021
136,851
July 1, 2021
2022
136,850
July 1, 2022
2023
137,577
July 1, 2023
2024
139,344
July 1, 2024
2025
139,535
July 1, 2025
Earlier history (2010–2019, prior Census vintage)
These figures come from the U.S. Census Bureau’s Vintage 2019 release — a separate, earlier methodology. They’re shown here as historical context only; the 2010 and 2019 values aren’t directly comparable to the 2020–2025 series above.
Population grew 5.7% from 2010 to 2019 (V2019 — see seam note below).
Stamford is the #203 largest of 19,483 U.S. cities and #2 in Connecticut.
▸ Show the analyst detail (9 rows)
Measure
Value
Note
2020 base
135,434
April 1, 2020 census base
5-yr change
+4,101
2020 base → 2025; within V2025
5-yr change %
+3.0%
within V2025 only
1-yr change
+191
2024 → 2025 estimate
1-yr change %
+0.1%
within V2025 only
Density
3,708
people per sq mi, land only
Land area
37.6
sq mi (2025 Gazetteer)
U.S. rank by population
#203
of 19,483 cities
State rank by population
#2
of 30 in Connecticut
What is the median household income in Stamford?
Median household income is 44% above the U.S. median ($111,586 vs $77,719); 10.1% live in poverty — 2.4 points below the 12.5% U.S. rate.
Median household income$111,586
US
Stamford: $111,586 — 44% above the US median of $77,719.
Scale: 10th–90th percentile of cities with ACS income data
Stamford
$111,586
United States
$77,719
Income and poverty estimates for Stamford from the U.S. Census Bureau's American Community Survey (ACS) 5-Year estimates (window 2020–2024). Every figure is shown with its 90% margin of error (MOE). Cells where the ± margin exceeds half the estimate are flagged "low precision." See methodology §12.
Measure
Estimate
± margin / note
Median household income
111,586+43.6% vs US
±4,563
Per capita income
67,068+54.9% vs US
±3,193
Population in poverty
10.1%
share of population for whom poverty status is determined
Median home value is 106% above the U.S. median ($624,400 vs $303,400); median rent is 69% above ($2,276 vs $1,348); price-to-income ratio is 5.6×, making it 1.4× as cost-burdened as the typical U.S. city (3.9×).
Median home value$624,400
US
Stamford: $624,400 — 106% above the US median of $303,400.
Scale: 10th–90th percentile of cities with ACS home-value data
HUD 2-BR fair-market rent$2,511/mo
US
Stamford: $2,511/mo — 133% above the US median of $1,077/mo.
Scale: 10th–90th percentile of cities with a HUD Fair Market Rent
Poverty (Census SAIPE 2024, model-based), unemployment (BLS LAUS 2024 annual averages), and remote-work share (ACS 2020–2024) for Stamford. Numbers are labeled at their native grain — place-grain when BLS publishes it, otherwise per-county. We do not compute population-weighted county averages. See methodology §13.
Measure
Value
Grain
Unemployment rate (annual avg)
2.8%
Stamford (BLS sub-state LAUS)
Civilian labor force
81,918
2024 annual avg
Worked from home
19.4%+38.4% vs US
share of workers 16+ commuting from home · U.S. median: 14% · ACS
County context — Stamford sits in Fairfield County:
County
Poverty rate
Median HH income
Unemployment
Fairfield County
—
—
—
Occupational wage data is not available for non-metropolitan areas. BLS Occupational Employment and Wage Statistics publishes at the metro level only. See methodology §25.
All items run 2.1% below the U.S. average (RPP 97.9); utilities run 52.1% above (RPP 152.1) — the area's utility cost premium is the main driver.
Cost of living (RPP, all items)RPP 97.9
US
Stamford's cost of living runs 2.1% below the U.S. average (RPP 97.9 vs 100).
Scale: 10th–90th percentile of metro/non-metro areas with a BEA price parity
BEA Regional Price Parity (all items)
RPP 97.9
−2.1% vs U.S. average · BEA 2024 · non-metro
HUD Fair Market Rent, 2-BR
$2,511/mo
FY2026 · Bridgeport-Stamford-Danbury, CT MSA
State income tax (top marginal rate)
6.99%
7 brackets · TY2025
Family-of-four monthly budget total
$10,980/mo
3BR rent + food + childcare + taxes + transport · federal sources
Single-adult monthly budget total
$6,278/mo
1BR rent + food + taxes + transport · federal sources
Local income tax
—
not applicable in Connecticut · no modeled local income tax
Household budget figures are arithmetic floors using current federal sources at the grains documented in methodology. Not a recommended salary, not a poverty threshold, not a composite score.
31.3% foreign-born (U.S. median 14%); Spanish is the most-spoken language at home other than English (22.5% of residents 5+).
A quick read on Stamford's residents — nativity and languages spoken at home shown above, from the ACS 5-Year 2020–2024. The full demographic breakdown (age, race and ethnicity, household types, and educational attainment, each with its margin of error) lives on the demographics page.
Hottest month: July (85°F avg high). Coldest: January (24°F avg low). Annual precipitation: 47.3 in.
30-year climate normals (1991-2020) for Stamford from the U.S. National Oceanic and Atmospheric Administration. See methodology §15 for the gridded vs. station source path.
Average monthly highs & lows · 30-year normal (NOAA 1991–2020). Every number on this chart is an average.
bar = avg daily high → avg daily lowprecip in inches below each barprecip in millimeters below each bar
11 non-satellite ISPs serve the area; 82% of locations have gigabit-capable service per ISP filings.
Fixed broadband availability for Stamford from the U.S. Federal Communications Commission's Broadband Data Collection (BDC), as of June 30, 2025. Every speed and provider count below is an ISP-reported advertised maximum — not measured throughput. Actual delivered speeds typically run 60–80% of advertised. See methodology §16.
Measure
Value
Note
Providers serving this city
11 + satellite
distinct ISPs, excluding satellite-only
Fiber providers
9
offer fiber-to-the-premises somewhere in the BDC
Units with ≥100/20 Mbps fixed
100.0%
share of broadband-serviceable units, ISP-reported max
Locations with ≥100 Mbps upload
82.1%
derived: max(fiber ≥100/20, gigabit). Fiber is symmetric; gigabit is ≥100 up by definition
Units with ≥1 Gbps fixed
82.1%
share of broadband-serviceable units, ISP-reported max
Total broadband-serviceable units
61,341
residential locations in the FCC Fabric (not households)
Source: FCC BDC · as of June 30, 2025 · methodology →
How much crime is reported in Stamford?
In 2024, law enforcement reported 215 violent and 1,672 property offenses in the Stamford jurisdiction — a violent-crime rate of 157.5 per 100,000, below the U.S. estimate of 359.1.
Reported offenses known to law enforcement from the FBI Uniform Crime Reporting Program (CIUS Table 8), 2024. Figures describe the FBI agency jurisdiction: Stamford — an FBI jurisdiction population of 136,483, versus the Census place population of 139,535. The rate per 100,000 is the FBI's own (count ÷ that jurisdiction population), never divided by the Census place figure. These are reported crimes under voluntary participation — not measured or victimization crime — and the FBI cautions against using them to rank or compare places. See methodology §31.
Offenses known, 2024
Count
Rate /100k
U.S. rate
Violent crime
215
157.5
359.1
Property crime
1,672
1,225.1
1,760.1
▸ Offense breakdown and 3-year trend
Offense, 2024
Count
Murder and nonnegligent manslaughter
1
Rape
15
Robbery
51
Aggravated assault
148
Burglary
207
Larceny-theft
1,215
Motor vehicle theft
250
Arson (12-month reporters only)
4
Year
Violent /100k
Property /100k
Jurisdiction pop.
2022
192.8
1,169.2
136,936
2023
171.4
1,161.8
136,512
2024
157.5
1,225.1
136,483
Only years the agency reported a complete 12 months appear; the FBI does not estimate missing agency-years, so a gap is a non-reporting year, not zero crime.
U.S. rate is the FBI national estimate (imputes non-reporting agencies); the city figures are reported-only. Source: FBI UCR CIUS Table 8 (2022–2024) · FBI agency jurisdiction: Stamford · methodology → · FBI Crime Data Explorer →
In-state context.
Stamford sits at state rank #2 among 30 cities in Connecticut. Nearby in the state ranking:
Just above in the profiled set: Jackson, MS · #202 · 141,196 residents.
Just below in the profiled set: Lewisville, TX · #204 · 139,006 residents.
Quick travel facts for Stamford
Quick travel facts.
Nearest commercial airport
Westchester County Airport(HPN) ·
9 mi 14 km from city centroid
Best months to visit
May · months when the avg high sits in 65–80°F and precipitation is at or below the city's median monthly precip
Sources: elevation from USGS Elevation Point Query Service (3DEP) · nearest airport from OurAirports CSV (FAA-aligned, type=large/medium, scheduled_service=yes) · best months derived from NOAA 1991-2020 normals · methodology →
Frequently asked questions about Stamford.
How many people live in Stamford, CT?
Stamford has 139,535 residents as of July 1, 2025, making it the #203 largest city in the United States and #2 in Connecticut. Source: U.S. Census Bureau Population Estimates Program, Vintage 2025.
Is Stamford growing or shrinking?
Stamford has grown 3.0% since the April 2020 census baseline, adding 4,101 residents, including a 0.1% increase from 2024 to 2025. Source: Census PEP Vintage 2025.
What was Stamford's population in the 2020 census?
The GEOID for Stamford is 0973000. These are the official datasets used by this profile's main data modules; click "methodology" for inclusion rules and the V2019 ↔ V2025 seam, or "source" for the raw publisher page. The headline population value above includes a source-detail disclosure with publisher, dataset, vintage, native geography, transformation, and caveat.
