Where can find data for average cost of long-distance relocation within the US?

It depends on so many factors. What is considered long distance vs local?

You can look at the rental truck companies to see what a vehicle would cost from point A to point B. I know that renting one to move from Chicago to Seattle was $2200 6 month ago. That includes estimated fuel use, not exact. And it also depends if the area you are going to is in need of a truck (remember - the truck sits there until needed) or if the area is saturated. If it's the latter, it will cost more.

To rent a POD for the same trip was $5800. Same difference, but they haul it, not you. And some city ordinances don't allow the PODS to be put on the street, such as Seattle and San Franciso due to the steeper inclines.

Also, the company will pay for different expenses depending on the level of position you are hiring into. So the higher up the ladder you are, the less you have to do.

I have moved many times. It really depends on how much you are willing to do on your own. Do you have a family to move? Are you willing to move your own stuff? You can call U-hall and let them know how many rooms of furniture you are planning to move and to what city and they can give you an estimate of the cost. Also boxes can get expensive if you buy them new. You can check with the U-Hall places around you and see if they bought any boxes back from customers. Stores are not that willing to save boxes any more. Then there is the rent expenses usually 1st and last month rent plus deposit. Registering your vehicle. Turning on utilities and so forth it all adds up. Use the Internet to get as much as you can done before you move to make it easier for you. If you have children that may need child care call a school in your area of interest and ask if there is any on site daycare (usually convenient and less expensive). If they don't they usually have information who does. That way you can figure that into your cost of living. You can all ways do a lot less work and pay someone else to do it for you.