Factory Design Pattern Generic return Type

I want to implement factory design pattern with a generic return type. I have created this example but I can't get it to work. How can my factory return a type of generic and how do I use it in main class. Here is my code:

namespace ConsoleApplication1
{
    using System;
    using System.Collections.Generic;
    class MainApp
    {
        static void Main()
        {
            Factory fac = new Factory();
            IPeople<T> pep = fac.GetPeople(PeopleType.RURAL);
            Console.WriteLine(pep.GetList());
        }
    }

    public interface IPeople<T>
    {
        List<T> GetList();
    }

    public class Villagers : IPeople<DomainReturn1>
    {
        public List<DomainReturn1> GetList()
        {
            return new List<DomainReturn1>();
        }
    }

    public class CityPeople : IPeople<DomainReturn2>
    {
        public List<DomainReturn2> GetList()
        {
            return new List<DomainReturn2>();
        }
    }

    public enum PeopleType
    {
        RURAL,
        URBAN
    }

    /// <summary>
    /// Implementation of Factory - Used to create objects
    /// </summary>
    public class Factory
    {
        public IPeople<T> GetPeople(PeopleType type)
        {
            switch (type)
            {
                case PeopleType.RURAL:
                    return (IPeople<DomainReturn1>)new Villagers();
                case PeopleType.URBAN:
                    return (IPeople<DomainReturn2>)new CityPeople();
                default:
                    throw new Exception();
            }
        }
    }

    public class DomainReturn1
    {
        public int Prop1 { get; set; }

    }

    public class DomainReturn2
    {
        public int Prop2 { get; set; }
    }
}