Table 4.  Estimates of the Total Housing Inventory for the
          United States:  Fourth Quarter 2005 and 2006

(Estimates are in thousands and may not add to total, due to rounding)


                                    Fourth    Fourth         90-Percent
                                   quarter   quarter   Confidence Interval    2006
Type                                 2005      2006    of 2006       of      Percent
                                   estimate  estimate  estimate  difference of total

All housing units.................  124,509   126,651       (X)        (X)       100

  Occupied........................  108,888   109,932       313        284        87
    Owner occupied................   75,163    75,763       627        429        60
    Renter occupied...............   33,725    34,169       538        415        27

  Vacant..........................   15,621    16,719       360        316        13
    Year-round vacant.............   11,857    12,675       354        302        10
      For rent....................    3,626     3,779       173        191         3
      For sale only...............    1,566     2,100       110        129         2
      Rented or sold,
      awaiting occupancy..........    1,059     1,015        70         99         1
      Held off market.............    5,606     5,783       246        213         5
        For occasional use........    1,819     1,897       143        123         1
        Temporarily occupied
        by persons with
        usual residence elsewhere.    1,133     1,137       111         97         1
        For other reasons.........    2,654     2,749       172        148         2

    Seasonal vacant...............    3,764     4,044       231        199         3
    aA 90-percent confidence interval is a measure of an estimate's reliability.  The larger 
the confidence interval is, in relation to the size of the estimate, the less reliable the estimate.
    (X)  Not Applicable.  Since the number of housing units is set equal to an independent national measure, 
there is no sampling error,and hence no confidence interval.
NOTE:  Since first quarter 2003, the Current Population Survey/Housing Vacancy Survey (CPS/HVS) estimates have 
been controlled to independent housing unit counts.  Doing so should make the CPS/HVS estimate of housing units 
more comparable to other Census Bureau housing surveys.