We use 300 kwh/month for a 1100 sq ft space, gas stove/water, electric dryer and heat pump (with gas backup). Your usage seems pretty reasonable to me. Especially if you're cooking often or spending a lot of time indoors with the kids.
I second the suggestion for the MassSave audit if you can manage it. MassSave qualifies you for rebates on energy efficiency appliances which might be worth it if you were near end of life for your fridge or anything like that. Other than insulation, air sealing, energy efficient appliances, programmable thermostat, LED bulbs, it might be worth checking if your dryer vent is clean and using dryer balls (I've found those cut our dryer times tremendously).