I have a After insert trigger on Account which Inserts Another object (Places) after checking Account Shipping fields with Address fields of 'Places' existing Records. If nothing found it inserts Places Records.

When i am Inserting Accounts using Dataloader with few duplicates in Excel sheet. Even though i have no duplicates existing(Data base) in my Places object. It inserting Duplicate Places dueto Account Duplicates in Excel sheet

trigger InsertUniquePlaces on Account (after insert,after update) {

List<places__c> Places= new List<places__c>();
Map<Id,Account> Accounts = new Map<Id,account>();
Map<String, Id> recordTypeMap = new Map <String,Id>();


List<String> street = new List<String>();
List<String> city = new List<String>();
List<String> state = new List<String>();
List<String> zipCode = new List<String>();
List<String> country = new List<String>();
set<Id> accountIds = new set<Id>(); 


// After Insert
if(trigger.IsInsert&&trigger.IsAfter)
{
    
    accounts = Trigger.newMap;
    
    for(Account ac : accounts.Values())
    {
            
                
                street.add(ac.ShippingStreet);
                city.add(ac.ShippingCity);
                state.add(ac.ShippingState);
                zipCode.add(ac.ShippingPostalCode);
                country.add(ac.ShippingCountry);
                
            
    }
   
    List<Places__c> ExistingPlaces = new List<places__c>();
    
    ExistingPlaces=[SELECT ID,Name,Street__c,City__c,State__c,
    Zip__c,Country__c FROM Places__c WHERE Street__c IN : street and 
    City__c IN : city and  State__c IN : state and Zip__c IN : zipCode and Country__c IN : country limit 50000];

   if(ExistingPlaces.size()==0)
   {
    // If nothing Matched, Direct Insert a Loacation Record for accounts in Trigger.new
    for(Account acc : accounts.Values())
        {
                Places__c location = new Places__c(
                                    name = acc.Name,
                                    Street__c = acc.ShippingStreet,
                                    City__c = acc.ShippingCity,
                                    State__c = acc.ShippingState,
                                    Zip__c = acc.ShippingPostalCode,
                                    Country__c = acc.ShippingCountry,
                                    Location_Account__c=acc.id;
                                    
                                    );
            
            Places.add(location); 
 
        }
        
        
    }


 if(locations.size()>0 )
    {
            Database.Insert(Places);
            //Upsert(Places);
    }

Is there Any way to Avoid Duplicate records with repeated shipping address(no more name comparsion) wise at below stage before hitting database

if(locations.size()>0 )
    {
            Database.Insert(Places);
            //Upsert(Places);
    }

I dont want to Insert duplicate places even though Inserted Accounts has Duplicates. Please any one suggest me. Thanks in advance