2026 comparison
Cergy vs Mantes-la-Jolie: 2026 comparison
Cergy has more inhabitants than Mantes-la-Jolie: 71,250 versus 43,683, or 63% more. Cergy is both larger (11.7 km² versus 9.4 km²) and more densely populated (6,116 inhabitants per km² versus 4,657).
The median apartment price is higher in Cergy: €3,320 per m² versus €2,667. The median standard of living is higher in Cergy (€22,560 a year versus €19,370).
The two cities are 26 km apart as the crow flies, in 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
© Pierre Poschadel, CC BY-SA 4.0
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Mantes-la-Jolie
City in Yvelines
- Population
- 43,683 inhab.
- 178th in France · 4th in its department
- Area
- 9.4 km²
- Density
- 4,657 per km²
Population
Population and demographics
Municipal population since 1876
CergyMantes-la-Jolie
| Criterion | Cergy | Mantes-la-Jolie | Difference |
|---|---|---|---|
| Population inhab.More populous: Cergy+63% | 71,250 | 43,683 | More populous: Cergy+63% |
| Change over 5 yearsStronger growth: Cergy+8.5 pts | +6.9% | −1.6% | Stronger growth: Cergy+8.5 pts |
| Change over 10 yearsStronger growth: Cergy+18 pts | +14.9% | −3.4% | Stronger growth: Cergy+18 pts |
| Density per km²Denser: Cergy+31% | 6,116 | 4,657 | Denser: Cergy+31% |
| Under 15More young people: Cergy+0.7 pt | 22.6% | 21.9% | More young people: Cergy+0.7 pt |
| 65 and overMore seniors: Mantes-la-Jolie+6.3 pts | 9.1% | 15.4% | More seniors: Mantes-la-Jolie+6.3 pts |
| People per householdLarger households: Mantes-la-Jolie+0.07 | 2.41 | 2.48 | Larger households: Mantes-la-Jolie+0.07 |
Sources: INSEE, official population figures, INSEE, censuses, INSEE, census
Housing
Real estate prices and housing
| Criterion | Cergy | Mantes-la-Jolie | Difference |
|---|---|---|---|
| Median apartment price €/m²More expensive: Cergy+24% | 3,320 | 2,667 | More expensive: Cergy+24% |
| Median house price €/m²More expensive: Cergy+4% | 3,113 | 2,998 | More expensive: Cergy+4% |
| Apartment rent €/m² per month, utilities includedMore expensive: Cergy+17% | 18.5 | 15.9 | More expensive: Cergy+17% |
| House rent €/m² per month, utilities includedMore expensive: Cergy+19% | 16.5 | 13.9 | More expensive: Cergy+19% |
| Homeowner householdsMore homeowners: Cergy+0.2 pt | 30.9% | 30.7% | More homeowners: Cergy+0.2 pt |
| Share of housesMore houses: Mantes-la-Jolie+0.9 pt | 15.8% | 16.7% | More houses: Mantes-la-Jolie+0.9 pt |
| Social housing (SRU law) share of primary residencesMore social housing: Mantes-la-Jolie+0.1 pt | 47.1% | 47.3% | More social housing: Mantes-la-Jolie+0.1 pt |
| Second homesMore second homes: Cergy+3.9 pts | 4.4% | 0.5% | More second homes: Cergy+3.9 pts |
| Vacant homesMore vacant homes: Cergy+1.6 pt | 7.9% | 6.3% | More vacant homes: Cergy+1.6 pt |
| Property tax (combined rate)Higher rate: Cergy+9.9 pts | 47.54% | 37.69% | Higher rate: Cergy+9.9 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 | Mantes-la-Jolie | Difference |
|---|---|---|---|
| Median standard of living €/yearHigher: Cergy+16% | 22,560 | 19,370 | Higher: Cergy+16% |
| Poverty rateHigher: Mantes-la-Jolie+8.5 pts | 24.9% | 33.4% | Higher: Mantes-la-Jolie+8.5 pts |
| Average taxable income per householdHigher: Cergy+9% | €24,053 | €22,149 | Higher: Cergy+9% |
| Households paying income taxMore taxpaying households: Cergy+4.6 pts | 38% | 34% | More taxpaying households: Cergy+4.6 pts |
| Activity rate (ages 15-64)Higher: Cergy+4.8 pts | 72.1% | 67.3% | Higher: Cergy+4.8 pts |
| Unemployment rate (census)Higher: Mantes-la-Jolie+4.1 pts | 15.1% | 19.2% | Higher: Mantes-la-Jolie+4.1 pts |
Sources: INSEE, Filosofi, DGFiP, income tax, INSEE, census
Local life
Town hall and fiber internet
| Criterion | Cergy | Mantes-la-Jolie | Difference |
|---|---|---|---|
| Mayor | Jean-Paul Jeandon | Adama Gaye | |
| Political label of the mayor’s list (2026 local elections) | union of the left | miscellaneous | |
| Premises with fiberBetter covered: Cergy+1.7 pt | 99% | 97% | Better covered: Cergy+1.7 pt |
Sources: Ministry of the Interior, register of elected officials, Ministry of the Interior, Arcep
Shops and facilities
Shops, leisure and transportation
| Criterion | Cergy | Mantes-la-Jolie | Difference |
|---|---|---|---|
| Shops per 10,000 inhab.More shops per capita: Mantes-la-Jolie+25% | 39.2279 in total | 49.0214 in total | More shops per capita: Mantes-la-Jolie+25% |
| Food shops per 10,000 inhab.More per capita: Mantes-la-Jolie+41% | 13.395 in total | 18.882 in total | More per capita: Mantes-la-Jolie+41% |
| Restaurants per 10,000 inhab.More per capita: Mantes-la-Jolie+39% | 30.6218 in total | 42.6186 in total | More per capita: Mantes-la-Jolie+39% |
| Sports facilities per 10,000 inhab.More per capita: Mantes-la-Jolie+41% | 14.6104 in total | 20.690 in total | More per capita: Mantes-la-Jolie+41% |
| Cultural venues per 10,000 inhab.More per capita: Mantes-la-Jolie+9% | 1.712 in total | 1.88 in total | More per capita: Mantes-la-Jolie+9% |
| Hotels per 10,000 inhab.More per capita: Cergy3.1 times as high | 1.410 in total | 0.52 in total | More per capita: Cergy3.1 times as high |
| Passenger train stationsMore stations: Cergy+1 | 3 | 2 | More stations: Cergy+1 |
Number of facilities per 10,000 inhabitants (total count in small print). Source: INSEE, facilities database (BPE)
Health
Health care
| Criterion | Cergy | Mantes-la-Jolie | Difference |
|---|---|---|---|
| Access to general practitioners visits/inhab./year localized potential accessibilityBetter access: Cergy+9% | 3.0 | 2.8 | Better access: Cergy+9% |
| General practitioners per 10,000 inhab.More per capita: Mantes-la-Jolie2.2 times as high | 3.827 in total | 8.537 in total | More per capita: Mantes-la-Jolie2.2 times as high |
| Medical specialists per 10,000 inhab.More per capita: Mantes-la-Jolie5.6 times as high | 3.827 in total | 21.393 in total | More per capita: Mantes-la-Jolie5.6 times as high |
| Dentists per 10,000 inhab.More per capita: Mantes-la-Jolie+7% | 7.352 in total | 7.834 in total | More per capita: Mantes-la-Jolie+7% |
| Pharmacies per 10,000 inhab.More per capita: Mantes-la-Jolie+30% | 2.115 in total | 2.712 in total | More per capita: Mantes-la-Jolie+30% |
| HospitalsMore facilities: Mantes-la-Jolie+5 | 1 | 6 | More facilities: Mantes-la-Jolie+5 |
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 | Mantes-la-Jolie | Difference |
|---|---|---|---|
| Primary schoolsMore schools: Cergy+16 | 53 | 37 | More schools: Cergy+16 |
| Middle schoolsMore middle schools: Cergy+2 | 10 | 8 | More middle schools: Cergy+2 |
| High schoolsMore high schools: Mantes-la-Jolie+1 | 4 | 5 | More high schools: Mantes-la-Jolie+1 |
| Higher education institutions and programsMore facilities: Cergy+25 | 27 | 2 | More facilities: Cergy+25 |
Sources: Ministry of Education, INSEE, facilities database (BPE)
Recorded crime
Offenses recorded by the police
| Criterion | Cergy | Mantes-la-Jolie | Difference |
|---|---|---|---|
| Home burglaries per 1,000 homesHigher rate: Cergy+41% | 4.3 | 3.1 | Higher rate: Cergy+41% |
| Non-violent thefts per 1,000 inhab.Higher rate: Cergy+55% | 12.9 | 8.3 | Higher rate: Cergy+55% |
| Physical violence outside the family per 1,000 inhab.Higher rate: Mantes-la-Jolie+35% | 3.3 | 4.5 | Higher rate: Mantes-la-Jolie+35% |
| Vehicle thefts per 1,000 inhab.Higher rate: Cergy+34% | 2.9 | 2.1 | Higher rate: Cergy+34% |
| Vandalism and property damage per 1,000 inhab.Higher rate: Mantes-la-Jolie+27% | 6.6 | 8.4 | Higher rate: Mantes-la-Jolie+27% |
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)
Climate
Temperature, sunshine and rain
| Criterion | Cergy | Mantes-la-Jolie | Difference |
|---|---|---|---|
| Average temperatureWarmer: Cergy+0.9 °C | 12.5°C | 11.6°C | Warmer: Cergy+0.9 °C |
| Rainfall mm/yearWetter: Cergy+4% | 667 | 642 | Wetter: Cergy+4% |
| Rainy days days/year at least 1 mmTie | 115 | 115 | Tie |
| Frost days days/yearMore frost days: Mantes-la-Jolie+6 days/year | 35 | 40 | More frost days: Mantes-la-Jolie+6 days/year |
| Very hot days days/year 30 °C or moreMore hot days: Cergy+5 days/year | 18 | 12 | More hot days: Cergy+5 days/year |
Climate normals from the reference Météo-France station of each commune. Source: Météo-France, climate normals
Natural hazards
Natural disasters and prevention
| Criterion | Cergy | Mantes-la-Jolie | Difference |
|---|---|---|---|
| Natural disasters declared since 1982More declarations: Cergy+18 | 21 | 3 | More declarations: Cergy+18 |
| Natural hazard prevention plansTie | 2 | 2 | Tie |
| Radon potentialSame | Low | Low | Same |
Sources: Géorisques (GASPAR), IRSN
Land
Area, terrain and administrative areas
| Criterion | Cergy | Mantes-la-Jolie | Difference |
|---|---|---|---|
| Area km²Larger: Cergy+24% | 11.7 | 9.38 | Larger: Cergy+24% |
| Town hall elevationHigher: Cergy+55 m | 94 m | 39 m | Higher: Cergy+55 m |
| Coastal communeSame | No | No | Same |
| Density grid (INSEE)Same | Large urban centre | Large urban centre | Same |
| Department | Val-d'Oise (95) | Yvelines (78) | |
| Intercommunality | Communauté d'agglomération de Cergy-Pontoise | Communauté urbaine Grand Paris Seine et Oise | |
| 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 Mantes-la-Jolie at a glance
| Criterion | Cergy | Mantes-la-Jolie |
|---|---|---|
| Population inhab. | 71,250 | 43,683 |
| Change over 10 years | +14.9% | −3.4% |
| Density per km² | 6,116 | 4,657 |
| Median apartment price €/m² | 3,320 | 2,667 |
| Median house price €/m² | 3,113 | 2,998 |
| Apartment rent €/m² | 18.5 | 15.9 |
| Property tax (combined rate) | 47.54% | 37.69% |
| Median standard of living €/year | 22,560 | 19,370 |
| Unemployment rate (census) | 15.1% | 19.2% |
| Premises with fiber | 99% | 97% |
| Access to general practitioners visits/inhab./year | 3.0 | 2.8 |
| Home burglaries per 1,000 homes | 4.3 | 3.1 |
| Average temperature | 12.5°C | 11.6°C |
| Area km² | 11.7 | 9.38 |
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FAQ
Cergy vs Mantes-la-Jolie: your questions
Which is the larger city, Cergy or Mantes-la-Jolie?
By population, Cergy: 71,250 inhabitants versus 43,683 for Mantes-la-Jolie (official population figures in force on January 1, 2026). Cergy is the 74th largest city in France, Mantes-la-Jolie the 178th. By area, Cergy is also the larger (11.7 km²).
How far is Cergy from Mantes-la-Jolie?
Cergy and Mantes-la-Jolie are 26 km apart as the crow flies, between the centers of the two communes.
Where is real estate more expensive, in Cergy or Mantes-la-Jolie?
To buy an apartment, Cergy is more expensive: €3,320 per m² (median price), versus €2,667 in Mantes-la-Jolie (+24%). Median prices of sales over the last five years (DGFiP, DVF).
Where is the standard of living higher, in Cergy or Mantes-la-Jolie?
In Cergy, half of the residents have a standard of living above €22,560 a year, versus €19,370 in Mantes-la-Jolie (disposable income per consumption unit, INSEE).
Are Cergy and Mantes-la-Jolie in the same department?
No: Cergy is in Val-d'Oise (95), and Mantes-la-Jolie in Yvelines (78), both in the Île-de-France region.
Official population figures in force on January 1, 2026. Source: INSEE, official population figures