2026 comparison
Cergy vs Saint-Ouen-l'Aumône: 2026 comparison
Cergy has more inhabitants than Saint-Ouen-l'Aumône: 71,250 versus 25,699, or 2.8 times as many. Saint-Ouen-l'Aumône covers a larger area (12.2 km² versus 11.7 km²), but Cergy is more densely populated: 6,116 inhabitants per km² versus 2,105.
The median apartment price is higher in Cergy: €3,320 per m² versus €3,198. The median standard of living is higher in Saint-Ouen-l'Aumône (€23,920 a year versus €22,560).
The two cities are 6.2 km apart as the crow flies, in the same department and the same urban unit (Paris).
© L. Pages - Ville de Cergy, CC BY-SA 4.0
Cergy
City in Val-d'Oise
- Population
- 71,250 inhab.
- 74th in France · 2nd in its department
- Area
- 11.7 km²
- Density
- 6,116 per km²
Saint-Ouen-l'Aumône
City in Val-d'Oise
- Population
- 25,699 inhab.
- 361st in France · 17th in its department
- Area
- 12.2 km²
- Density
- 2,105 per km²
Population
Population and demographics
Municipal population since 1876
CergySaint-Ouen-l'Aumône
| Criterion | Cergy | Saint-Ouen-l'Aumône | Difference |
|---|---|---|---|
| Population inhab.More populous: Cergy2.8 times as high | 71,250 | 25,699 | More populous: Cergy2.8 times as high |
| Change over 5 yearsStronger growth: Cergy+2.0 pts | +6.9% | +4.9% | Stronger growth: Cergy+2.0 pts |
| Change over 10 yearsStronger growth: Cergy+7.0 pts | +14.9% | +7.9% | Stronger growth: Cergy+7.0 pts |
| Density per km²Denser: Cergy2.9 times as high | 6,116 | 2,105 | Denser: Cergy2.9 times as high |
| Under 15More young people: Cergy+0.5 pt | 22.6% | 22.1% | More young people: Cergy+0.5 pt |
| 65 and overMore seniors: Saint-Ouen-l'Aumône+3.4 pts | 9.1% | 12.5% | More seniors: Saint-Ouen-l'Aumône+3.4 pts |
| People per householdLarger households: Cergy+0.02 | 2.41 | 2.39 | Larger households: Cergy+0.02 |
Sources: INSEE, official population figures, INSEE, censuses, INSEE, census
Housing
Real estate prices and housing
| Criterion | Cergy | Saint-Ouen-l'Aumône | Difference |
|---|---|---|---|
| Median apartment price €/m²More expensive: Cergy+4% | 3,320 | 3,198 | More expensive: Cergy+4% |
| Median house price €/m²More expensive: Saint-Ouen-l'Aumône+11% | 3,113 | 3,469 | More expensive: Saint-Ouen-l'Aumône+11% |
| Apartment rent €/m² per month, utilities includedMore expensive: Cergy+0.4% | 18.5 | 18.4 | More expensive: Cergy+0.4% |
| House rent €/m² per month, utilities includedMore expensive: Cergy+5% | 16.5 | 15.6 | More expensive: Cergy+5% |
| Homeowner householdsMore homeowners: Saint-Ouen-l'Aumône+16 pts | 30.9% | 47.0% | More homeowners: Saint-Ouen-l'Aumône+16 pts |
| Share of housesMore houses: Saint-Ouen-l'Aumône+13 pts | 15.8% | 28.8% | More houses: Saint-Ouen-l'Aumône+13 pts |
| Social housing (SRU law) share of primary residencesMore social housing: Cergy+12 pts | 47.1% | 35.5% | More social housing: Cergy+12 pts |
| Second homesMore second homes: Cergy+3.8 pts | 4.4% | 0.6% | More second homes: Cergy+3.8 pts |
| Vacant homesMore vacant homes: Cergy+4.6 pts | 7.9% | 3.3% | More vacant homes: Cergy+4.6 pts |
| Property tax (combined rate)Higher rate: Cergy+3.2 pts | 47.54% | 44.37% | Higher rate: Cergy+3.2 pts |
Sources: DGFiP (DVF), Ministry of Housing (rent map), INSEE, census, Ministry for the Ecological Transition (SRU), DGFiP, local taxation
Income and jobs
Residents’ income and jobs
| Criterion | Cergy | Saint-Ouen-l'Aumône | Difference |
|---|---|---|---|
| Median standard of living €/yearHigher: Saint-Ouen-l'Aumône+6% | 22,560 | 23,920 | Higher: Saint-Ouen-l'Aumône+6% |
| Poverty rateHigher: Cergy+2.4 pts | 24.9% | 22.5% | Higher: Cergy+2.4 pts |
| Average taxable income per householdHigher: Saint-Ouen-l'Aumône+12% | €24,053 | €27,042 | Higher: Saint-Ouen-l'Aumône+12% |
| Households paying income taxMore taxpaying households: Saint-Ouen-l'Aumône+6.3 pts | 38% | 45% | More taxpaying households: Saint-Ouen-l'Aumône+6.3 pts |
| Activity rate (ages 15-64)Higher: Saint-Ouen-l'Aumône+4.2 pts | 72.1% | 76.4% | Higher: Saint-Ouen-l'Aumône+4.2 pts |
| Unemployment rate (census)Higher: Cergy+2.8 pts | 15.1% | 12.3% | Higher: Cergy+2.8 pts |
Sources: INSEE, Filosofi, DGFiP, income tax, INSEE, census
Local life
Town hall and fiber internet
| Criterion | Cergy | Saint-Ouen-l'Aumône | Difference |
|---|---|---|---|
| Mayor | Jean-Paul Jeandon | Laurent Linquette | |
| Political label of the mayor’s list (2026 local elections) | union of the left | miscellaneous left | |
| Premises with fiberBetter covered: Cergy+1.8 pt | 99% | 97% | Better covered: Cergy+1.8 pt |
Sources: Ministry of the Interior, register of elected officials, Ministry of the Interior, Arcep
Shops and facilities
Shops, leisure and transportation
| Criterion | Cergy | Saint-Ouen-l'Aumône | Difference |
|---|---|---|---|
| Shops per 10,000 inhab.More shops per capita: Saint-Ouen-l'Aumône+25% | 39.2279 in total | 49.0126 in total | More shops per capita: Saint-Ouen-l'Aumône+25% |
| Food shops per 10,000 inhab.More per capita: Saint-Ouen-l'Aumône+20% | 13.395 in total | 16.041 in total | More per capita: Saint-Ouen-l'Aumône+20% |
| Restaurants per 10,000 inhab.More per capita: Cergy+12% | 30.6218 in total | 27.270 in total | More per capita: Cergy+12% |
| Sports facilities per 10,000 inhab.More per capita: Saint-Ouen-l'Aumône+23% | 14.6104 in total | 17.946 in total | More per capita: Saint-Ouen-l'Aumône+23% |
| Cultural venues per 10,000 inhab.More per capita: Cergy+44% | 1.712 in total | 1.23 in total | More per capita: Cergy+44% |
| Hotels per 10,000 inhab.More per capita: Saint-Ouen-l'Aumône+39% | 1.410 in total | 1.95 in total | More per capita: Saint-Ouen-l'Aumône+39% |
| Passenger train stationsMore stations: Saint-Ouen-l'Aumône+2 | 3 | 5 | More stations: Saint-Ouen-l'Aumône+2 |
Number of facilities per 10,000 inhabitants (total count in small print). Source: INSEE, facilities database (BPE)
Health
Health care
| Criterion | Cergy | Saint-Ouen-l'Aumône | Difference |
|---|---|---|---|
| Access to general practitioners visits/inhab./year localized potential accessibilityBetter access: Saint-Ouen-l'Aumône+12% | 3.0 | 3.4 | Better access: Saint-Ouen-l'Aumône+12% |
| General practitioners per 10,000 inhab.More per capita: Saint-Ouen-l'Aumône3.2 times as high | 3.827 in total | 12.131 in total | More per capita: Saint-Ouen-l'Aumône3.2 times as high |
| Medical specialists per 10,000 inhab.More per capita: Saint-Ouen-l'Aumône2.9 times as high | 3.827 in total | 10.928 in total | More per capita: Saint-Ouen-l'Aumône2.9 times as high |
| Dentists per 10,000 inhab.More per capita: Cergy+71% | 7.352 in total | 4.311 in total | More per capita: Cergy+71% |
| Pharmacies per 10,000 inhab.More per capita: Saint-Ouen-l'Aumône+11% | 2.115 in total | 2.36 in total | More per capita: Saint-Ouen-l'Aumône+11% |
| HospitalsTie | 1 | 1 | Tie |
Practitioners and facilities per 10,000 inhabitants (total count in small print); access to doctors includes those in neighboring communes. Sources: Ministry of Health (DREES), APL, INSEE, facilities database (BPE), Ministry of Health (Finess)
Education
Schools and colleges
| Criterion | Cergy | Saint-Ouen-l'Aumône | Difference |
|---|---|---|---|
| Primary schoolsMore schools: Cergy+40 | 53 | 13 | More schools: Cergy+40 |
| Middle schoolsMore middle schools: Cergy+6 | 10 | 4 | More middle schools: Cergy+6 |
| High schoolsMore high schools: Saint-Ouen-l'Aumône+1 | 4 | 5 | More high schools: Saint-Ouen-l'Aumône+1 |
| Higher education institutions and programsMore facilities: Cergy+26 | 27 | 1 | More facilities: Cergy+26 |
Sources: Ministry of Education, INSEE, facilities database (BPE)
Recorded crime
Offenses recorded by the police
| Criterion | Cergy | Saint-Ouen-l'Aumône | Difference |
|---|---|---|---|
| Home burglaries per 1,000 homesHigher rate: Saint-Ouen-l'Aumône+53% | 4.3 | 6.6 | Higher rate: Saint-Ouen-l'Aumône+53% |
| Non-violent thefts per 1,000 inhab.Higher rate: Cergy2.2 times as high | 12.9 | 5.9 | Higher rate: Cergy2.2 times as high |
| Physical violence outside the family per 1,000 inhab.Higher rate: Cergy+31% | 3.3 | 2.5 | Higher rate: Cergy+31% |
| Vehicle thefts per 1,000 inhab.Higher rate: Saint-Ouen-l'Aumône+43% | 2.9 | 4.1 | Higher rate: Saint-Ouen-l'Aumône+43% |
| Vandalism and property damage per 1,000 inhab.Higher rate: Saint-Ouen-l'Aumône+2% | 6.6 | 6.8 | Higher rate: Saint-Ouen-l'Aumône+2% |
Offenses recorded in the commune by the police and gendarmerie, per 1,000 inhabitants (per 1,000 homes for burglaries); this is not the actual crime level. Rates for the latest published year. Source: Ministry of the Interior (SSMSI)
Natural hazards
Natural disasters and prevention
| Criterion | Cergy | Saint-Ouen-l'Aumône | Difference |
|---|---|---|---|
| Natural disasters declared since 1982More declarations: Cergy+12 | 21 | 9 | More declarations: Cergy+12 |
| Natural hazard prevention plansTie | 2 | 2 | Tie |
| Radon potentialSame | Low | Low | Same |
Sources: Géorisques (GASPAR), IRSN
Land
Area, terrain and administrative areas
| Criterion | Cergy | Saint-Ouen-l'Aumône | Difference |
|---|---|---|---|
| Area km²Larger: Saint-Ouen-l'Aumône+5% | 11.7 | 12.2 | Larger: Saint-Ouen-l'Aumône+5% |
| Town hall elevationHigher: Cergy+69 m | 94 m | 25 m | Higher: Cergy+69 m |
| Coastal communeSame | No | No | Same |
| Density grid (INSEE)Same | Large urban centre | Large urban centre | Same |
| DepartmentSame | Val-d'Oise (95) | Val-d'Oise (95) | Same |
| IntercommunalitySame | Communauté d'agglomération de Cergy-Pontoise | Communauté d'agglomération de Cergy-Pontoise | Same |
| Urban unitSame | Paris | Paris | Same |
| Functional areaSame | Paris | Paris | Same |
Sources: IGN, IGN, elevation, Ministry for the Ecological Transition, Loi Littoral, INSEE, density grid, INSEE, COG, INSEE, geographic classifications
Summary
Cergy vs Saint-Ouen-l'Aumône at a glance
| Criterion | Cergy | Saint-Ouen-l'Aumône |
|---|---|---|
| Population inhab. | 71,250 | 25,699 |
| Change over 10 years | +14.9% | +7.9% |
| Density per km² | 6,116 | 2,105 |
| Median apartment price €/m² | 3,320 | 3,198 |
| Median house price €/m² | 3,113 | 3,469 |
| Apartment rent €/m² | 18.5 | 18.4 |
| Property tax (combined rate) | 47.54% | 44.37% |
| Median standard of living €/year | 22,560 | 23,920 |
| Unemployment rate (census) | 15.1% | 12.3% |
| Premises with fiber | 99% | 97% |
| Access to general practitioners visits/inhab./year | 3.0 | 3.4 |
| Home burglaries per 1,000 homes | 4.3 | 6.6 |
| Average temperature | 12.5°C | 12.5°C |
| Sunshine h/year | — | 1,634 |
| Area km² | 11.7 | 12.2 |
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Compare with other towns
FAQ
Cergy vs Saint-Ouen-l'Aumône: your questions
Which is the larger city, Cergy or Saint-Ouen-l'Aumône?
By population, Cergy: 71,250 inhabitants versus 25,699 for Saint-Ouen-l'Aumône (official population figures in force on January 1, 2026). Cergy is the 74th largest city in France, Saint-Ouen-l'Aumône the 361st. By area, Saint-Ouen-l'Aumône is the larger (12.2 km²).
How far is Cergy from Saint-Ouen-l'Aumône?
Cergy and Saint-Ouen-l'Aumône are 6.2 km apart as the crow flies, between the centers of the two communes, in the same department (Val-d'Oise).
Where is real estate more expensive, in Cergy or Saint-Ouen-l'Aumône?
To buy an apartment, Cergy is more expensive: €3,320 per m² (median price), versus €3,198 in Saint-Ouen-l'Aumône (+4%). Median prices of sales over the last five years (DGFiP, DVF).
Where is the standard of living higher, in Cergy or Saint-Ouen-l'Aumône?
In Saint-Ouen-l'Aumône, half of the residents have a standard of living above €23,920 a year, versus €22,560 in Cergy (disposable income per consumption unit, INSEE).
Are Cergy and Saint-Ouen-l'Aumône in the same department?
Yes: both towns are in Val-d'Oise (95), in the Île-de-France region.
Official population figures in force on January 1, 2026. Source: INSEE, official population figures