Top 10 Most Dangerous Cities In Ontario (2024)

While Canada is one of the safest countries in the world due to the presence of certain systems and structures that has been very helpful in promoting good and adequate security, the fact remains that there is no perfect society on earth. Hence, different Canadian regions, including Ontario, has had its fair share of crime.  However, the truth is, crime is more severe in some parts of Ontario than in others.

Some of the most dangerous cities in Ontario includes Thunder Bay, Brantford, Sault Ste. Marie, London, Windsor, Kitchener-Waterloo-Cambridge, Greater Sudbury, Kingston, Peterborough, and Catherines-Niagara.

These are the cities in Ontario with the most incidents of crime based on their Crime Severity Index, hence, referred to as the most dangerous cities in the region:

Top 10 Most Dangerous Cities In Ontario

1. Thunder Bay

While Thunder Bay is a nice place in Ontario, it is also a crime center, due to several crime incidents carried out in within its territories in recent times. Of course, when compared to what is happening in several other places in the world, it is not as intense as others. Nevertheless, we are talking about Ontario, and since the highest number of crimes took place in Thunder Bay, it has to be on this spot.

Some of the factors contributing to the crime in Thunder Bay include alcohol addiction, poverty, drug, and homelessness.

2. Brantford

There are more people living in Brantford than in Thunder Bay, and it’s also a place in Ontario that has recorded a worrying number of crimes. There have been reported cases of residential breaking and entering, vehicle thefts, thefts from vehicles, and several other mischiefs. There have been reported cases of robberies with a weapon, and its obvious folks residing in Brantford must step up security measures in their home and their vicinity.

3. Sault Ste. Marie

Sault Ste. Marie is not as populated as Thunder Bay and Brantford, but it is also one of the most dangerous cities in Ontario. Due to the high rate of reported cases of crimes, this beautiful place is not one of the safest cities at all. There have been several violent and non-violent crimes, incidents of assault, sexual assaults, robberies, and so on. While Sault Ste. Marie is a beautiful place in Ontario, with different nice things and peculiar uniqueness, it is filled with some amount of crimes too.

However, the police are trying as much as possible to be proactive and accessible. You can always reach out to them, even online, to report issues, and report a crime too.

4. London

London is a big city in Ontario and is actually one of the most populated in the region. Nevertheless, it can still be referred to as one of the most dangerous places in the region. There have been several reported cases of robberies, commercial breaking and entering, motor vehicle thefts, and so on. Due to some reasons, crime rates in the city have been increasing. Hence, wisdom demands that folks should as much as possible put in place adequate structures to keep them safe and well.

5. Windsor

Windsor is the pride of Canada due to its great contributions to the automotive industry in the country. However, it has its own blemish – the crimes. Some time back, the drug trade came to stay in the city, and it unavoidably increased crime rates in this beautiful city. There have been reported cases of homicides, attempted murders, robberies, and sexual assaults. However, the police service is not bad, as folks can always file a police report online, or simply give a call across.

6. Kitchener-Waterloo-Cambridge

While there are more people living here than in the previously highlighted cities, however, they have to be placed on the sixth spot, since it’s fairly better. The authorities are doing all they could to banish crime from their region. Nevertheless, there are mischievous folks around. But not to be scared, the police is doing all they could to ensure the safety of residents. Hence, you can utilize the online crime reporting tool they have created.

7. Greater Sudbury

Actually, Greater Sudbury has a good reputation too, in different ways and dimensions. The city is one of the cheapest places you can live in Ontario. However, it is also one with a number of reported crime cases. There have been arson cases, property crimes, violent crimes, fraud and even drugs.

We know Greater Sudbury has much nice stuff, and it’s not a utopian society (no where is). Nevertheless, we can only admonish you to ensure you are very security conscious and should always see to it that your home is safe. Always lock your doors and windows, and don’t forget to always do so. When you are not at home, ensure you keep exterior and interior lights on too.

8. Kingston

We should also start with nice stuff about Kingston. Here is another nice place in Ontario, and it’s one of the most affordable places in the region. Unfortunately, this city, which served briefly as Canada’s capital city many years ago, is also regarded as one of the most dangerous cities in Ontario. There have been reported cases of break-ins, robberies, and murder. Many violent and non-violent crimes have been reported.

Talk about sexual assault, robberies, breaking and entering, motor vehicle theft, fraud cases, criminal traffic violations, etc. These things happen in Kingston, and it’s a wake-up call for residents to be security conscious. Of course, the police in the city are trying as much as possible to be proactive. They are even trying to engage folks living in the city for awareness and crime prevention.

9. Peterborough

Peterborough is actually another nice place in Ontario. It is a beautiful place that has a lot of beautiful things. However, it was placed on this list for obvious reasons. Of course, we should note that crimes here is not as severe as it is in some other cities in Ontario (particularly those that were highlighted above). It has been made known too that as far as the city of Peterborough is concerned, most violent crimes reported were a result of drug crimes. It should also be noted that the city police are doing all they could to tackle the menace. Of course, the citizens too must play proactive roles to ensure they are vehemently security conscious and smart.

10. Catherines-Niagara

St. Catherines-Niagara too is on the list. Actually, crimes here re aren’t as severe as they are elsewhere. Nevertheless, residents too must be careful. There have been reported cases of sexual assault, extortion, identity fraud,  breaking and entering, robbery, and so on.

As expected, the police here are as proactive as possible. They keep folks well-informed about criminal activities in the area. In the case of any distress, you can always quickly give them a call. These guys have a Media Center that can be helpful too. For instance, they even create a page for Niagara’s most wanted people. But while the police is playing its own role, you must be responsible with yours too, as far as security consciousness is concerned.



Ontario is one of the best places to live in Canada. However, these most dangerous cities in Ontario has revealed that this region is no where near perfection, yet. There have been different scary news that should encourage folks to be so security conscious, and beef up security too. Different things are happening almost everyday. Talk about vehicle theft, sexual assault, robberies, and so on.

If you own a house (or rent an apartment) in any of these cities in Ontario, you should take necessary precautions too. This is because, it has been made known that breaking and entering is a prominent threat. Thus, folks should strive to protect their homes and loved ones by having a professional home security system.

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